Solve the Equation $\log _ { 3 } ( 3 x + 7 ) = \log _ { 3 } ( 3 x + 2 )$

Multiple Choice

Solve the equation.
- $\log _ { 3 } ( 3 x + 7 ) = \log _ { 3 } ( 3 x + 2 )$

A) $\{ 5 \}$
B) $\{ 0 \}$
C) $\varnothing$
D) $\left\{ \frac { 9 } { 5 } \right\}$