A Long Thin Rod of Length 2L Rotates with a Constant

Multiple Choice

A long thin rod of length 2L rotates with a constant angular acceleration of 8.0 rad/s2 about an axis that is perpendicular to the rod and passes through its center.
-What is the ratio of the centripetal acceleration of a point on the end of the rod to that of a point a distance L/2 from the end of the rod?

A) 1:1
B) 1:2
C) 2:1
D) 4:1
E) 1:4