Solve the Following Equation $8 \sin ^ { 2 } 2 x = 4$

Multiple Choice

Solve the following equation.​ $8 \sin ^ { 2 } 2 x = 4$ ​

A) $\frac { 4 \pi } { 3 } + n \pi , \frac { 2 \pi } { 3 } + n \pi$
B) ​ $\frac { \pi } { 2 } + n \pi , \frac { 2 \pi } { 5 } + n \pi$
C) ​ $\frac { \pi } { 8 } + \frac { n \pi } { 2 } , \frac { 3 \pi } { 8 } + \frac { n \pi } { 2 }$
D) ​ $\frac { 2 \pi } { 3 } + n \pi , \frac { 2 \pi } { 3 } + n \pi$
E) ​ $\frac { \pi } { 3 } + n \pi , \frac { \pi } { 3 } + n \pi$