Solve the Equation for Exact Solutions $\arcsin 2 x + 2 \arccos x = \pi$

Multiple Choice

Solve the equation for exact solutions.
- $\arcsin 2 x + 2 \arccos x = \pi$

A) $\left\{ - \frac { \sqrt { 3 } } { 2 } , \frac { \sqrt { 3 } } { 2 } \right\}$
B) $\{ 0 \}$
C) $\left\{ - \frac { \sqrt { 3 } } { 4 } , \frac { \sqrt { 3 } } { 4 } \right\}$
D) $\{ 1 \}$