Which problem would best be solved using 22/7 as an approximation of π?
A. Find the perimeter of a rectangle with side lengths of 3 ft and 4 ft.
B. Find the area of a circle with a radius of 33.1 in.
C. Find the circumference of a circle with a diameter of 14 ft.
D. Find the circumference of a circle with a radius of 12 m.