Problem Solving

The runners on a cross country team ran a \(5\)-mile race at average (arithmetic mean) speeds ranging from \(4\) miles per hour to \(7\) miles per hour, inclusive. Which of the following are possible race completion times for individual members of the team?

I. \(48\) minutes
II. \(60\) minutes
III. \(75\) minutes

A. I only
B. II only
C. III only
D. I and III only
E. I, II, and III

OA E