Solve the Following Equation $4 \cos x + 2 = 0$

Multiple Choice

Solve the following equation.
$4 \cos x + 2 = 0$

A) $\frac { 4 \pi } { 3 } + n \pi , \frac { 2 \pi } { 3 } + n \pi$
B) $\frac { 2 \pi } { 3 } + 2 n \pi , \frac { 4 \pi } { 3 } + 2 n \pi$
C) $\frac { 7 \pi } { 6 } + 2 n \pi , \frac { 11 \pi } { 6 } + 2 n \pi$
D) $\frac { \pi } { 3 } + n \pi , \frac { \pi } { 3 } + n \pi$
E) $\frac { \pi } { 2 } + n \pi , \frac { 2 \pi } { 5 } + n \pi$