Solve the Exponential Equation $$5 ^ { 3 x } = 2.8$$

Multiple Choice

Solve the exponential equation. Express the solution set in terms of natural logarithms.
- $$5 ^ { 3 x } = 2.8$$

A) $\left\{ \frac { \ln 2.8 } { 3 \ln 5 } \right\}$
B) $\left\{ \frac { \ln 2.8 } { 5 \ln 3 } \right\}$
C) $\left\{ \frac { 3 \ln 2.8 } { \ln 5 } \right\}$
D) $\left\{ \frac { 2.8 \ln 3 } { \ln 5 } \right\}$