请教一道六级阅读真题It is said that the public and Congressional conce

请教一道六级阅读真题
It is said that the public and Congressional concern about deceptive(欺骗性的) p ackaging rumpus(喧嚣) started because Senator Hart discovered that the boxes of cereals consumed by him,Mrs.Hart,and their children were becoming higher and narrower,with a decline of net weight from 12 to 10.5 ounces,without any reduc tion in price.There were still twelve biscuits,but they had been reduced in si ze.Later,the Senator rightly complained of a store?bought pie in a handsomely illustrated box that pictured,in a single slice,almost as many cherries as there were in the whole pie.
The manufacturer who increases the unit price of his product by changing his package size to lower the quantity delivered can,without undue hardship,put h is product into boxes,bags,and tins that will contain even ounce,ounce,one?pound,two?pound quantities of breakfast foods,cake mixes,etc.A study of drugstore(杂货店) and supermarket shelves will convince any observer that all possible size and shapes of boxes,jars,bottles,and tins are in use at the same time,and,as the package journals show,week by week,there is never any hesitation in introducing a new size and shape of box or bottle when it aids in pro duct differentiation.The producers of packaged products argue strongly against changing sizes of packages to contain even weights and volumes,but no one in the trade comments unfavorably on the huge costs incurred by endless changes of pa ckage sizes,materials,shape,art work,and net weights that are used for improving a product's market position.
When a packaging expert explained that he was able to multiply the price of hard sweets by 2.5,from 1 dollar to 2.50 dollars by changing to a fancy jar,or that he had made a ounce bottle look as thought it held 8 ounces,he was in effect telling the public that packaging can be a very expensive luxury.It evidently does come high,when an average family pays about 200 dollars a year for bottles,cans,boxes,jars and other containers,most of which can't be used anything but stuffing the garbage can.
23.Consumers are concerned about the changes in the package size,mainly because _____.
A) they hate to see any changes in things they are familiar with
B) the unit price for a product often rises as a result
C) they have to pay for the cost of changing package sizes.
D) this entails an increase in the cost of packaging
定位到第二段,但是最后选错了,请大家能告诉我怎样做能作对呢

如果是我选B
因为第一段那个consumer抱怨的就是换包装后实物减少了
而且开篇也提出deceptive packaging是人们关心的问题
第二段说到The manufacturer who increases the unit price,说明生产者换包装是为了提高单位价格
最后一段说包装导致浪费,也导致换了很多没必要的钱,不过毕竟是行家说的,我觉得是在陈述事实,而不是消费者的想法
综上,选B,生产者想通过换包装来欺骗消费者,但消费者看穿了,换包装的目的是为了提高单位价格
不知道对不对哈