A If $f$ Is an Invertible Function Such That $f ( 3 ) = 3$

Multiple Choice

A. If $f$ is an invertible function such that $f ( 3 ) = 3$ , then $f ^ { - 1 } ( 3 ) = \frac { 1 } { 3 }$ .
B. A one-to-one function is invertible.
C. If $f$ and $g$ are inverses of each other then $f$ and $g$ have the same domain.

A) A and B are true.
B) B and C are true.
C) Only B is true.
D) None of these