Solve the Equation for X, Where X Is Restricted to the Given

Solve the equation for x, where x is restricted to the given interval.
- $3 y = \tan 6 x$ , for $x$ in $\left( - \frac { \pi } { 12 } , \frac { \pi } { 12 } \right)$

A) $x = 6 \arctan \frac { y } { 3 }$
B) $x = 2 \arctan y$
C) $x = \frac { 1 } { 2 } \arctan y$
D) $x = \frac { 1 } { 6 } \arctan 3 y$