Find the Length of the Curve Over the Given Interval $$r = 2 ( 1 + \cos \theta ) , 0 \leq \theta \leq 2 \pi$$

Multiple Choice

Find the length of the curve over the given interval. $$r = 2 ( 1 + \cos \theta ) , 0 \leq \theta \leq 2 \pi$$

A) 2
B) 20
C) 16
D) 8
E) 4