Which function models the area of a rectangle with side lengths of 2x – 4 units and x + 1 units? What is the area when x = 3? A. f(x) = 2x2 – 4x + 4; A = 10 B. f(x) = 2x2 + 8x – 4; A = 38 C. f(x) = 2x2 – 8x + 4; A = 2 D. f(x) = 2x2 − 2x − 4; A = 8