If f(x) = x² + x + 2 from x = 0 to x = 12, approximate the area under the curve using n = 6 right-endpoint rectangles. Which of the following options correctly represents the area under the curve?

A) Approximate the area using n = 6 left-endpoint rectangles from x = 0 to x = 12.
B) Approximate the area using n = 6 right-endpoint rectangles from x = 0 to x = 12.
C) Approximate the area using n = 6 midpoint rectangles from x = 0 to x = 12.
D) Approximate the area using n = 6 trapezoids from x = 0 to x = 12.