Which of the Following Is a Solution to the Given $2 \cos x + \sqrt { 3 } = 0$

Which of the following is a solution to the given equation?
$2 \cos x + \sqrt { 3 } = 0$

A)
$x = \frac { 2 \pi } { 3 }$
B)
$x = \frac { \pi } { 4 }$
C)
$x = \frac { \pi } { 6 }$
D)
$x = \frac { 7 \pi } { 6 }$
E)
$x = \frac { 7 \pi } { 4 }$