Write the Fraction in Simplest Form $\frac { 60 } { 80 }$

Write the fraction in simplest form.
- $\frac { 60 } { 80 }$

A) $\frac { 20 } { 4 }$
B) $\frac { 3 } { 20 }$
C) $\frac { 3 } { 4 }$
D) $\frac { 60 } { 80 }$