Let $\mathbf { F } ( x , y ) = y \sin x \mathbf { i } - \cos x \mathbf { j }$

Multiple Choice

Let $\mathbf { F } ( x , y ) = y \sin x \mathbf { i } - \cos x \mathbf { j }$ where C is the line segment from $\left( \frac { \pi } { 2 } , 0 \right)$ to $( \pi , 1 )$ . Then $\int$ C $\mathbf { F } \bullet d \mathbf { r }$ is

A) 1
B) 2
C) $\frac { 5 } { 2 }$
D) 3
E) $\frac { 7 } { 2 }$