If R Is the Region Bounded By $y = 2 x , y = \frac { x } { 2 }$

Multiple Choice

If R is the region bounded by $y = 2 x , y = \frac { x } { 2 }$ and $x = \frac { \pi } { 2 }$ then $\iint$ R $\sin x d A$ is

A) $\frac { 3 } { 5 }$
B) $\frac { 1 } { 4 }$
C) $\frac { 1 } { 2 }$
D) $\frac { 3 } { 4 }$
E) $\frac { 3 } { 2 }$