Frank rides the bus 45 minutes each week. Kori rides the bus
2
3
the amount of time Frank rides the bus. Amy rides the bus
1
2
the amount of time Kori rides the bus. Altogether, how much time, in minutes, do Frank, Kori, and Amy ride the bus each week?

A.
30 minutes

B.
45 minutes

C.
75 minutes

D.
90 minutes