A police jeep is chasing with velocity $45 km/hr$ a thief in another jeep moving with velocity $153\;km/hr$. The police fires a bullet with muzzle velocity 0f $180\; m/s$. The velocity with which it will strike the car of the thief is

Question

$$(a)\;150\; m/s \quad (b)\;27 \;m/s \quad (c)\;450 \;m/s \quad(d)\;250 \; m/s$$