A motorcyclist covers a distance of 192 km at a speed of 32 km/h. A car starts from the same place as the motorcyclist 2.5 hours later, but covers the same distance 0.5 hour earlier. What is the ratio of the speed of the car and the motorcycle?

A

1 : 2

B

2 : 1

C

3 : 1

D

4 : 3