The Matrices a and B Are Defined as Follows: a =

Multiple Choice

The matrices A and B are defined as follows: A = $\left( \begin{array} { r r } 4 & 5 \\- 1 & 6\end{array} \right)$ , B = $\left( \begin{array} { r r } 1 & - 1 \\2 & 0\end{array} \right)$ Carry out the indicated matrix operation. $A B$

A) $\left( \begin{array} { c c } 14 & - 4 \\11 & 13\end{array} \right)$
B) $\left( \begin{array} { c c } 14 & - 4 \\11 & 1\end{array} \right)$
C) $\left( \begin{array} { r r } 4 & - 13 \\11 & 1\end{array} \right)$
D) $\left( \begin{array} { c c } 12 & - 4 \\11 & 13\end{array} \right)$
E) $\text { not defined }$