Express the Following as a Single Logarithm $-$ 6 Log B Z
A)

Express the following as a single logarithm. (Assume that all variables represent positive real numbers.) 2 log b x + 9 log b y $-$ 6 log b z

A) $\log b \frac { y ^ { 6 } z ^ { 9 } } { x ^ { 2 } }$
B) $\log b \frac { x ^ { 2 } y ^ { 9 } } { z ^ { 6 } }$
C) $\log b \frac { x ^ { 6 } } { y ^ { 9 } z ^ { 2 } }$
D) $\log b \frac { z ^ { 2 } } { x ^ { 9 } y ^ { 6 } }$