Which vehicle has an acceleration of 5 m/s²?

A a bicycle, when its speed changes from rest to 2.5 m/s in 2s

B a car, when its speed changes from rest to 15 m/s in 5s

C a lorry, when its speed changes from rest to 20 m/s in 15s

D a motorbike, when its speed changes from rest to 50 m/s in 10s