I called you just now ,but nobody answered.Where____?I was out with my mother.

题目

I called you just now ,but nobody answered.Where____?I was out with my mother.
A.were you B.are you C.have you gone D.have you been
正确答案是D,但我认为是A,谁能给我解释一下为什么选D啊

答案

答案A.
注意时态前后一致：
A:Where【were you】?
B:I 【was】 out with my mother.
比较：
A:Where【have you been】?
B:I 【have been】 out with my mother.