Add or Subtract as Indicated $$\frac { 1 } { 3 } + \frac { 1 } { 18 }$$

Multiple Choice

Add or subtract as indicated.
- $$\frac { 1 } { 3 } + \frac { 1 } { 18 }$$

A) $\frac { 2 } { 21 }$
B) $\frac { 1 } { 9 }$
C) $\frac { 7 } { 18 }$
D) $\frac { 11 } { 27 }$