Solve
- $2^{7-3 x}=\frac{1}{4}$ A) $\{3\}$ B) $\left\{\frac{1}{2}\right\}$ C) $\{-3\}$ D) $\{8\}$

Multiple Choice

Solve.
- $2^{7-3 x}=\frac{1}{4}$

A) $\{3\}$
B) $\left\{\frac{1}{2}\right\}$
C) $\{-3\}$
D) $\{8\}$