Between 1956 and 2000, the Rate of Change of the Winning

Multiple Choice

Between 1956 and 2000, the rate of change of the winning times for the 100-meter butterfly at a world-class swimming competition can be described by seconds per year, where t is the number of years since 1900. Find, to four decimal places, the average rate of change of the winning times for the competition from 1956 through 2000.

A) 0.5076 seconds per year
B) -0.0154 seconds per year
C) 0.0002 seconds per year
D) 0.0083 seconds per year
E) -0.3192 seconds per year