Sarah and Kelvin are calculating the area of a circle with a radius of 52 cm. Kelvin uses 3.14 for pi when calculating this area while Sarah uses the pi button on her calculator. Kelvin gets a solution of 8,490.56 cm2, and Sarah gets a solution of 8,494.87 cm2.

A. Both answers are equally accurate.
B. Kelvin; He did not have to round his answer.
C. Neither answer is accurate as pi or 3.14 is not in the formula for the area of a circle.
D. Sarah; The pi button on the calculator gives a more accurate representation for pi than 3.14.