PLEASE HELPPP PLEAS! (will give brainliest)

At a bus station, buses begin their routes at 4:00 p. m. The schedule for
two of the buses is based on the intervals listed below. Bus A has a long
route and leaves the station every 90 minutes. Bus B has a short route and
leaves the station every 30 minutes. What is the next time Bus A and Bus B
will leave the bus station at the same time? *

5:00PM

5:30PM

6:00PM

6:30PM