A toy car moves anticlockwise on a circular track of radius 2m. At point P on the east side of the track, its instantaneous velocity is towards the north. After the car has moved one quarter of a revolution, which option correctly gives (i) the direction of its instantaneous velocity and (ii) the direction of the change in velocity for this interval?
a) Velocity towards south; change in velocity towards west
b) Velocity towards west; change in velocity towards north-west (away from the centre)
c) Velocity towards west; change in velocity towards south-west (towards the centre)
d) Velocity towards west; change in velocity towards east (towards the centre)