Evaluate $2 \times 2$ Determinant $$\left| \begin{array} { l l } 4 & 2 \\1 & 5\end{array} \right|$$

Evaluate $2 \times 2$ determinant. $$\left| \begin{array} { l l } 4 & 2 \\1 & 5\end{array} \right|$$

A) 22
B) 13
C) 18