Which of the following choices can NOT be used to complete the s

Which of the following choices can NOT be used to complete the sentence “It is John’s brother ______you met in the street yesterday”?
A、that
B、who
C、whom
D、which
【正确答案】：D
【题目解析】：此为强调句型：It is (was) +that (who/whom) +句子的其余部分。