Solve the Problem $0.6$ Revolutions Per Second? Round Your Answer to the Nearest Tenth

Solve the problem.
-The sprocket assembly on a bicycle consists of a chain and two sprockets, one on the pedal and the other on the rear wheel. If the sprocket on the pedal is 3 inches in diameter, the sprocket on the rear wheel is 2 inches in diameter, and the rear wheel is 26 inches in diameter, how fast is the bicycle traveling in miles per hour when the cyclist is pedaling at the rate of $0.6$ revolutions per second? Round your answer to the nearest tenth mph.

A) $3.2 \mathrm { mph }$
B) $8.2 \mathrm { mph }$
C) $6.2 \mathrm { mph }$
D) $4.2 \mathrm { mph }$