Simplify : $\bigg[ \bigg( \large\frac{1}{2}\bigg)^2 -\bigg( \large\frac{1}{4} \bigg)^3 \bigg] \times 2^3$

Question

$\begin{array}{1 1} \large\frac{15}{8} \\ \large\frac{8}{15} \\ \large\frac{-15}{8} \\ \frac{-8}{15} \end{array} $