Tell Whether the Given Number Is a Solution of the Equation

Multiple Choice

Tell whether the given number is a solution of the equation. $\frac { 3 + x } { 9 } - x = \frac { 1 } { 3 }$ ; $x = 0$

A) non-quantified solution
B) unequal solution
C) not a solution
D) solution
E) none of these