Write as the Sum And/or Difference of Logarithms $\log _ { 7 } \frac { \sqrt [ 2 ] { 15 } } { y ^ { 2 } x }$

Multiple Choice

Write as the sum and/or difference of logarithms. Express powers as factors.
- $\log _ { 7 } \frac { \sqrt [ 2 ] { 15 } } { y ^ { 2 } x }$

A) $\frac { 1 } { 2 } \log _ { 7 } 15 - 2 \log _ { 7 } y - 2 \log _ { 7 } x$
B) $\frac { 1 } { 2 } \log _ { 7 } 15 - 2 \log _ { 7 } y - \log _ { 7 } x$
C) $\log _ { 19 } 5 - \log _ { 19 } n - \log _ { 19 } \mathrm {~m}$
D) $2 \log _ { 7 } 15 - 2 \log _ { 7 } y - \log _ { 7 } 2$