Find the Volume of a Pyramid with Height 4 and Base

Multiple Choice

Find the volume of a pyramid with height 4 and base an equilateral triangle with side a = 4 .

A) $\frac{16 \sqrt{3}}{3}$
B) $\frac{3 \sqrt{3}}{2}$
C) $16 \sqrt{3}$
D) $\frac{16 \sqrt{3}}{5}$
E) $\frac{\sqrt{3}}{10}$