Decide Whether or Not the Matrices Are Inverses of Each

Multiple Choice

Decide whether or not the matrices are inverses of each other.
- $$\left[ \begin{array} { r r } - 2 & 4 \\4 & - 4\end{array} \right] \text { and } \left[ \begin{array} { c c } \frac { 1 } { 2 } & \frac { 1 } { 4 } \\\frac { 1 } { 2 } & \frac { 1 } { 4 }\end{array} \right]$$

A) Yes
B) No