--Which do you prefer Simon tea or milk ?-- is OK . I dont mind .A. BothB. EitherC. No

问题补充：

--Which do you prefer, Simon ,tea or milk ?

-- is OK . I don mind .

A. Both

B. Either

C. None

D. All

答案：

A. Both

(答案→)B. Either

C. None

D. All

解析：根据上文的内容问两句tea or milk，下文答语内容I don mind，可知答案为B