Solve the Equation $81 ^ { x } = 243$ A) $x = - \frac { 5 } { 4 }$

Multiple Choice

Solve the equation. $81 ^ { x } = 243$

A) $x = - \frac { 5 } { 4 }$
B) $x = \frac { 9 } { 4 }$
C) $x = \frac { 5 } { 4 }$
D) $x = \frac { 1 } { 4 }$