Express the Given Logarithm as a Sum And/or Difference of Logarithms

Multiple Choice

Express the given logarithm as a sum and/or difference of logarithms. Simplify, if possible. Assume that all variables represent positive real numbers.
- $\log _{9} \frac{\sqrt[4]{19}}{s^{2} r}$

A) $\log _{9} 19-\log _{9} s-\log _{9} r$
B) $\frac{1}{4} \log _{9} 19-2 \log _{9} s-\log _{9} r$
C) $4 \log _{9} 19-2 \log _{9} \mathrm{~s}-\log _{9} 4$
D) $\frac{1}{4} \log _{9} 19-2 \log _{9} s-2 \log _{9} r$