Decide What Values of the Variable Cannot Possibly Be Solutions $$x = \sqrt { 2 x + 15 }$$

Multiple Choice

Decide what values of the variable cannot possibly be solutions for the equation.
- $$x = \sqrt { 2 x + 15 }$$

A) $\{ 5 , - 3 \}$
B) $\varnothing$
C) $\{ 2 \}$
D) $\{ 5 \}$