Which of the following is equal to the area of the region inside the polar curve r=2cos(θ) and outside the polar curve r=cos(θ)? a) 3 ∫ cos^2 (θ) dθ from 0 to pi/2 b) 3 ∫ cos^2 (θ) dθ from 0 to pi c) (3/2) ∫ cos^2 (θ) dθ from 0 to pi/2 d) 3 ∫ cos(θ) dθ from 0 to pi/2 e) 3 ∫ cos(θ) dθ from 0 to pi