Differentiate $\frac { x + 2 } { x - 1 }$

Multiple Choice

Differentiate.
-ln $\frac { x + 2 } { x - 1 }$

A) $\frac { 3 x } { ( x + 2 ) ( x - 1 ) }$
B) $\frac { 1 } { x + 2 }$ - $\frac { 1 } { x - 1 }$
C) $\frac { ( x - 1 ) } { ( x + 2 ) ( x + 3 ) }$
D) $\frac { x - 1 } { x + 2 }$
E) none of these