Evaluate the Integral $\int_{0}^{1} 9 x \sin \pi x d x$

Multiple Choice

Evaluate the integral. $\int_{0}^{1} 9 x \sin \pi x d x$

A) $2.8665$
B) 6.5700
C) 0.7166
D) 11.8665
E) $\text { None of these }$