Perform the Indicated Operation $\frac { 7 } { 9 } - \frac { 1 } { 12 }$

Multiple Choice

Perform the indicated operation. Simplify your answers.
- $\frac { 7 } { 9 } - \frac { 1 } { 12 }$

A) $\frac { 25 } { 36 }$
B) $\frac { 13 } { 18 }$
C) $\frac { 1 } { 2 }$
D) $\frac { 2 } { 3 }$