Find the Volume of the Solid Generated by Revolving the Region

Multiple Choice

Find the volume of the solid generated by revolving the region about the given line.
-The region in the first quadrant bounded above by the line $y = 1$ , below by the curve $y = \sqrt { \sin 4 x }$ , and on the left by the $y$ -axis, about the line $y = 1$

A) $\frac { \pi ^ { 2 } } { 8 } + \frac { \pi } { 4 }$
B) $\frac { \pi } { 8 } - \frac { 1 } { 4 }$
C) $\frac { \pi } { 4 } + 4$
D) $\frac { \pi ^ { 2 } } { 8 } - \frac { \pi } { 4 }$