Solve the Equation by Expressing Each Side as a Power $$3 x = 27$$

Solve the equation by expressing each side as a power of the same base and then equating exponents.
- $$3 x = 27$$

A) $\{ 3 \}$
B) $\{ 9 \}$
C) $\{ 4 \}$
D) $\{ 2 \}$