Differentiate $\sqrt { \ln 3 x }$ A) $\frac { 1 } { 6 x }$

Multiple Choice

Differentiate.
- $\sqrt { \ln 3 x }$

A) $\frac { 1 } { 6 x }$
B) $\frac { 1 } { 3 \times \sqrt { \ln 3 x } }$
C) $\frac { 1 } { 2 x \sqrt { \ln 3 x } }$
D) $\frac { 1 } { 6 \times \sqrt { \ln 3 x } }$
E) none of these