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：
