Solve Simplify the Answer $14 \frac { 1 } { 7 }$

Solve. Simplify the answer.
-Jerry caught a fish that weighed $14 \frac { 1 } { 7 }$ pounds. Pat caught a fish that weighed $7 \frac { 4 } { 7 }$ pounds. How much more did Jerry's fish weigh than Pat's fish?

A) $21 \frac { 4 } { 7 } \mathrm { lb }$
B) $6 \frac { 4 } { 7 } \mathrm { lb }$
C) $20 \frac { 4 } { 7 } \mathrm { lb }$
D) $6 \frac { 3 } { 7 } \mathrm { lb }$