Perform the Indicated Operation $\frac { 25 } { 42 } - \frac { 7 } { 42 }$

Multiple Choice

Perform the indicated operation. Where possible, reduce the answer to its lowest terms.
- $\frac { 25 } { 42 } - \frac { 7 } { 42 }$

A) $\frac { 16 } { 21 }$
B) $\frac { 2 } { 7 }$
C) $\frac { 2 } { 3 }$
D) $\frac { 3 } { 7 }$