A trout swam at a steady speed for 1.5 minutes. During that time, it passed beneath a woman swimming at 1,800 centimeters per minute, and it swam 5,700 centimeters. What was the trout's speed?
a) 3,800 cm/min
b) 5,700 cm/min
c) 7,600 cm/min
d) 9,500 cm/min
