Decide What Values of the Variable Cannot Possibly Be Solutions $$4 x = \sqrt { 1 - 6 x }$$

Multiple Choice

Decide what values of the variable cannot possibly be solutions for the equation.
- $$4 x = \sqrt { 1 - 6 x }$$

A) $\left\{ \frac { 1 } { 8 } \right\}$
B) $\left\{ - \frac { 1 } { 2 } \right\}$
C) $\left\{ \frac { 1 } { 4 } \right\}$
D) $\left\{ \frac { 1 } { 2 } \right\}$