Solve the Equation $\log ( 3 x ) = \log 5 + \log ( x - 4 )$

Multiple Choice

Solve the equation.
- $\log ( 3 x ) = \log 5 + \log ( x - 4 )$

A) $\left\{ - \frac { 5 } { 2 } \right\}$
B) $\left\{ \frac { 1 } { 2 } \right\}$
C) $\{ - 10 \}$
D) $\{ 10 \}$