"The man talking with my mom is our math teacher" has all the following possible meanings

"The man talking with my mom is our math teacher" has all the following possible meanings EXCEPT______.

A．the man who will talk with my mom...

B．the man who is talking with my mom...

C．the man who has been talking with my mom...

D．the man who has talked with my mom...

请帮忙给出正确答案和分析，谢谢！