Add the Rational Expressions $$\frac { 3 x } { x - 6 } + \frac { 12 } { x - 6 }$$

Multiple Choice

Add the rational expressions. Be sure to express your answer in simplest form. $$\frac { 3 x } { x - 6 } + \frac { 12 } { x - 6 }$$

A) $\frac { 3 ( x + 4 ) } { x - 6 }$
B) $\frac { 3 ( x - 4 ) } { x - 6 }$
C) $\frac { 3 x + 5 } { x - 6 }$
D) $\frac { 3 x + 4 } { x - 6 }$
E) $\frac { 3 ( x - 4 ) } { x + 6 }$