Solve the Equation $$\log _ { 4 } x - \log _ { 4 } ( 4 x - 7 ) = \frac { 1 } { 2 } \log _ { 4 } 4$$

Multiple Choice

Solve the equation. Write the solution set with the exact solutions. Also give approximate solutions to 4
decimal places if necessary.
- $$\log _ { 4 } x - \log _ { 4 } ( 4 x - 7 ) = \frac { 1 } { 2 } \log _ { 4 } 4$$

A) $\{ 2 , - 2 \}$
B) $\{ 2 \}$
C) { }
D) $\{ - 2 \}$