Perform the Indicated Operation $$\frac { 5 } { 12 } - \frac { 1 } { 7 }$$

Multiple Choice

Perform the indicated operation. Express your answer in simplest form.
- $$\frac { 5 } { 12 } - \frac { 1 } { 7 }$$

A) $\frac { 4 } { 19 }$
B) $\frac { 1 } { 21 }$
C) $\frac { 23 } { 84 }$
D) $\frac { 23 } { 19 }$