Choose the One Alternative That Best Completes the Statement or Answers

Choose the one alternative that best completes the statement or answers the question.
Solve the equation.
- $$32 ^ { x + 5 } = 4 ^ { 3 x - 1 }$$

A) $\{ 12 \}$
B) $\{ 3 \}$
C) $\{ 27 \}$
D) \{ \}