Solve the Following Equation $12 \sec ^ { 2 } x - 16 = 0$

Multiple Choice

Solve the following equation.​ $12 \sec ^ { 2 } x - 16 = 0$ ​

A) $\frac { 3 \pi } { 2 } + 2 \pi , \frac { 3 \pi } { 2 } + 2 \pi$
B) ​ $\frac { 7 \pi } { 2 } + 2 \pi , \frac { 3 \pi } { 2 } + 2 \pi$
C) ​ $\frac { 5 \pi } { 2 } + 2 \pi , \frac { 5 \pi } { 2 } + 2 \pi$
D) ​ $\frac { \pi } { 6 } + n \pi , \frac { 5 \pi } { 6 } + n \pi$
E) ​ $\frac { \pi } { 2 } + 2 \pi , \frac { 3 \pi } { 2 } + 2 \pi$