Before the meeting began, I made an introduction ________ the speaker, who many people present didn't know.

1. A.
   of
2. B.
   for
3. C.
   to
4. D.
   about

Before the meeting began, I made an introduction ________ the speaker, who many people present didn't know.

[　　]

A. of 　　　　　　　　   B. for 　　　　　　　　  C. to 　　　　　　　　   D. about