Write the Expression Using Only the Indicated Logarithms $\log _ { 1 / 6 } ( a - b )$

Multiple Choice

Write the expression using only the indicated logarithms.
- $\log _ { 1 / 6 } ( a - b )$ using common logarithms

A) $\frac { \log ( a - b ) } { \log 6 }$
B) $\frac { 1 } { \log 6 }$
C) $- \frac { \log ( a - b ) } { \log 6 }$
D) $\frac { \log 6 } { \log ( a - b ) }$