Which of the Following Is a Solution to the Given $\cot x + 1 = 0$

Multiple Choice

Which of the following is a solution to the given equation?
$\cot x + 1 = 0$

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