The problem asks to evaluate or determine a matrix based on the given information. The matrices $A$, $B$, and $C$ are defined as follows:

$A = \begin{pmatrix} 2 & 3 \\ -2 & 1 \end{pmatrix}, \quad B = \begin{pmatrix} 3 & -4 \\ 6 & 5 \end{pmatrix}, \quad C = \begin{pmatrix} -1 & -4 \\ 3 & 2 \end{pmatrix}$

It seems the question is asking for the result of a matrix operation involving these matrices (perhaps their product or another operation) to match one of the choices (a) to (e). To proceed, I will clarify which operation is required (multiplication, addition, etc.) and check which result fits the given options.

Could you confirm the required operation?