Solve the Equation $$\left( \frac { 4 } { 5 } \right) ^ { x } = \frac { 625 } { 256 }$$

Solve the equation. $$\left( \frac { 4 } { 5 } \right) ^ { x } = \frac { 625 } { 256 }$$

A) x = 6
B) x = -4
C) x = -6
D) x = -5
E) x = 4