Perform the Operation and Reduce the Answer to Lowest Terms $21 \frac { 3 } { 4 } - 14 \frac { 1 } { 6 }$

Multiple Choice

Perform the operation and reduce the answer to lowest terms.
- $21 \frac { 3 } { 4 } - 14 \frac { 1 } { 6 }$

A) $\frac { 1 } { 12 }$
B) $\frac { 12 } { 91 }$
C) $7 \frac { 7 } { 12 }$
D) $45 \frac { 1 } { 2 }$