Use Inverse Functions Where Needed to Find All Solutions of the Equation

Multiple Choice

Use inverse functions where needed to find all solutions of the equation in the interval [0,2π) .​ $\sec ^ { 2 } x - 6 \sec x = 0$ ​

A) $\arccos \left( \frac { 1 } { 6 } \right) , 2 \pi + \arccos \left( \frac { 1 } { 6 } \right)$
B) ​ $\arccos \left( \frac { 1 } { 6 } \right) , \arccos \left( \frac { 1 } { 6 } \right) - 2 \pi$
C) ​ $\arccos \left( \frac { 1 } { 6 } \right) + \pi , \arccos \left( \frac { 1 } { 6 } \right) - \pi$
D) ​ $\arccos \left( \frac { 1 } { 6 } \right) , 2 \pi - \arccos \left( \frac { 1 } { 6 } \right)$
E) ​ $\arccos \left( \frac { 1 } { 6 } \right) + 2 \pi , \arccos \left( \frac { 1 } { 6 } \right) - 2 \pi$