The length of a rectangle is represented by the function L(x) = 2x. The width of that same rectangle is represented by the function W(x) = 8x² − 4x + 1. Which of the following shows the area of the rectangle in terms of x?
a. A(x) = 16x³ - 8x² + 2x
b. B(x) = 16x³ - 8x² - 2x
c. C(x) = 16x³ - 4x² + 2x
d. D(x) = 16x³ - 4x² - 2x