问题
Out of the crowded bus ,who was dressed in a black suit and waved to a woman.
A:a tall man in his thirties stepped
B:stepped a tall man in his thirties
C:did a tall man in his thirties step
D:did a tall man step in his thirties
B:stepped a tall man in his thirties
C:did a tall man in his thirties step
D:did a tall man step in his thirties
正确答案是：
