Linear Algebra

If $A$ and $B$ are non-singular $n \times n$ matrices, which of the following expressions is always equal to $(A B)^{-1}$?

Options:

• (A) $B^{-1} A^{-1}$
• (B) $A^{-1} B^{-1}$
• (C) $(B A)^{-1}$
• (D) $A^{-1} + B^{-1}$