Integrate the Function F Over the Given Region $f ( x , y ) = 4 x \sin x y$

Multiple Choice

Integrate the function f over the given region.
- $f ( x , y ) = 4 x \sin x y$ over the rectangle $0 \leq x \leq \pi , 0 \leq y \leq 1$

A) $4 \pi$
B) $\pi$
C) $\frac { \pi } { 4 }$
D) $4 \pi - 4$