Write an Equivalent Expression in Exponential Form $\log _ { 5 } 625 = 4$

Write an equivalent expression in exponential form.
- $\log _ { 5 } 625 = 4$

A) $5625 = 4$
B) $4 ^ { 5 } = 625$
C) $5 ^ { 4 } = 625$
D) $625 ^ { 4 } = 5$