Calculate the Arc Length of the Indicated Portion of the Curve

Multiple Choice

Calculate the arc length of the indicated portion of the curve r(t) .
-r(t) = ( 3 - 6t) i + ( 2 + 2t) j + ( 9t - 7) k, -5 $\le$ t $\le$ 3

A) -22
B) 968
C) -242
D) 88