Use Properties of Logarithms to Expand the Logarithmic Expression as Much

Multiple Choice

Use properties of logarithms to expand the logarithmic expression as much as possible.
- $\log _ { 8 } \sqrt { \frac { x y } { 15 } }$

A) $\frac { 1 } { 2 } \log _ { 8 } x y - \frac { 1 } { 2 } \log _ { 8 } 15$
B) $\frac { 1 } { 2 } \log _ { 8 } x + \frac { 1 } { 2 } \log _ { 8 } y - \frac { 1 } { 2 } \log _ { 8 } 15$
C) $\frac { 1 } { 2 } \log _ { 8 } x * \frac { 1 } { 2 } \log _ { 8 } y \div \frac { 1 } { 2 } \log _ { 8 } 15$
D) $\frac { 1 } { 2 } \log _ { 8 } x + \frac { 1 } { 2 } \log _ { 8 } y - \log _ { 8 } 15$