Find $\sin \theta$ Given That $\sec \theta = 4$ And $0 < \theta < \frac { \pi } { 2 }$

Multiple Choice

Find $\sin \theta$ given that $\sec \theta = 4$ and $0 < \theta < \frac { \pi } { 2 }$ .

A) $4$
B) $\sqrt { 15 }$
C) $\frac { \sqrt { 15 } } { 4 }$
D) $\frac { 1 } { \sqrt { 15 } }$
E) $\frac { 1 } { 16 }$