She agrees to let her son have a stereo of his own because____.(She Is an Unwilling Tool of Middleclassdom)

题目
She agrees to let her son have a stereo of his own because____.(She Is an Unwilling Tool of Middleclassdom)

A. he was her favorite

B. he is a musician

C. all 15-year-olds should have their own stereos

D. she wants to be fair with the children