Change the Exponential Expression to an Equivalent Expression Involving a Logarithm

Multiple Choice

Change the exponential expression to an equivalent expression involving a logarithm.
- $$4 ^ { 3 } = x$$

A) $\log _ { 4 } x = 3$
B) $\log _ { \mathrm { x } } 4 = 3$
C) $\log _ { 3 } x = 4$
D) $\log _ { 4 } 3 = x$