Solve and Check the Equation $$x ^ { 3 / 2 } = 8$$

Solve and check the equation.
- $$x ^ { 3 / 2 } = 8$$

A) $\{ 4 \}$
B) $\{ 16 \sqrt { 2 } \}$
C) $\{ 2 \}$
D) $\{ \sqrt [ 3 ] { 2 } \}$