shall i buy something for you?

shall i buy something for you? shall i buy simething for you? Shall I buy acup of tea for you? shall i buy a cup of tea for you? .—Shall I buy a cup of tea for you? 1.Shall I buy a cup of tea for you? Shall I buy a cup of tea for you?可不可以回答成No,I won't – Shall I buy a cup of tea for you?–________.（不,不要.） 1.shall i buy a cup of tea for you A no,you won't B no,you a shall i buy a cup of tea for you?___【不,不要】A no,you wonnot Bn Shall I buy a cup of tea for you?回答成No,you won’t.还是No,please Shall i buy a cup of tea for you?__(不,不要）A.No you won’t B No