Write as the Sum And/or Difference of Logarithms $\log _ { 4 } \sqrt { 7 x }$

Multiple Choice

Write as the sum and/or difference of logarithms. Express powers as factors.
- $\log _ { 4 } \sqrt { 7 x }$

A) $\log _ { 4 } \sqrt { 7 } + \log _ { 4 } \sqrt { x }$
B) $\frac { 1 } { 2 } \log _ { 4 } 7 x$
C) $\frac { 1 } { 2 } \log _ { 4 } 7 + \frac { 1 } { 2 } \log _ { 4 } x$
D) $\log _ { 4 } 7 + \frac { 1 } { 2 } \log _ { 4 } x$