Differentiate $\frac { \sin x } { x }$ A) Cos X
B)

Multiple Choice

Differentiate.
- $\frac { \sin x } { x }$

A) cos x
B) $\frac { \cos x } { x }$
C) $\frac { 1 } { x }$ cos x - $\frac { 1 } { x ^ { 2 } }$ sin x
D) none of these