If clothes in a washing machine have a tangential velocity of 1.4 m/s, and the diameter of the washing machine is 0.6 m, what is the magnitude and direction of the centripetal acceleration?
a. 3.27 m/s² clockwise
b. 6.53 m/s² clockwise
c. 6.53 m/s² towards the center
d. 3.27 m/s² towards the center