The distance formula states that distance (d) is equal to the product of rate (r) and time (f). Given this problem: john at a constant rate of 200 m per minute. How many minutes did it take john to run 500 m?

which equation could be used to solve the problem.

A. t = 500d/200

B. t = 200/500

C. t = 500/200

D. t = 200r/500