Perform the Indicated Operation $\frac { x + 4 } { 9 } + \frac { 3 } { 9 }$

Multiple Choice

Perform the indicated operation. Simplify if possible.
- $\frac { x + 4 } { 9 } + \frac { 3 } { 9 }$

A) $\frac { x + 7 } { 9 }$
B) $\frac { x + 7 } { 18 }$
C) $\frac { 7 x } { 18 }$
D) $\frac { 7 \mathrm { x } } { 9 }$