Change the Exponential Expression to an Equivalent Expression Involving a Logarithm

Multiple Choice

Change the exponential expression to an equivalent expression involving a logarithm.
- $\log _ { 5 } 125 = x$

A) $5 ^ { x } = 125$
B) $x ^ { 5 } = 125$
C) $125 x = 5$
D) $125 ^ { 5 } = x$