A Sculptor Is Sharpening a Chisel on Grindstone of Radius

Multiple Choice

A sculptor is sharpening a chisel on grindstone of radius 1.0 m that is spinning with a constant angular speed of 2.0 rad/s.
-What is the magnitude of the centripetal acceleration of a point on the rim of the grindstone?

A) zero m/s²
B) 0.5 m/s²
C) 1.0 m/s²
D) 2.0 m/s²
E) 4.0 m/s²