Five minivans and three trucks are traveling on a 3.0 mile circular track and complete a full lap in 98.0, 108.0, 113.0, 108.0, 102.0, 101.0, 85.0, and 95 seconds, respectively. Assuming all the vehicles are traveling at constant speeds, what is the time-mean speed of the minivans in mi/hr? Pay attention to rounding.

a) 101.250 mi/h
b) 100.543
c) 106.400