Function K(v) represents the kinetic energy, in joules, of an object with a mass of 20 kilograms traveling with velocity v meters/second (m/s). The difference quotient of K(v) is 20v + 10h. What is the average rate of change in
kinetic energy of an object as the velocity increases from 5 m/s to 12.5 m/s?
A. 175 joules
B. 225 Joules
C. 300 Joules
D. 325 joules