On a 40 minute bike ride the bicycle wheels revolve 2400 times. What is the constant of proportionality?

(A.) 0.016 revolutions per minute; the cons of proportionality is 0.016.

(B.) 20 revolutions per minute; the constant of proportionality is 20.

(C.) 40 revolutions per minute; the constant of proportionality is 40.

(D.) 60 revolutions per minute; the constant of proportionality is 60.