$\mathrm{A} C D$ Has a Diameter Of $12.0 \mathrm{~cm}$ If The Has

Multiple Choice

$\mathrm{A} C D$ has a diameter of $12.0 \mathrm{~cm}$ . If the $\mathrm{CD}$ starts from rest and has a constant angular acceleration of 2.00 $\mathrm{rad} / \mathrm{sec}^{2}$ , then the radial acceleration of a point $3.00 \mathrm{~cm}$ from the center of the CD after $3.00 \mathrm{sec}$ is

A) $1.58 \mathrm{~m} / \mathrm{s}^{2}$ .
B) $0.950 \mathrm{~m} / \mathrm{s}^{2}$ .
C) $1.25 \mathrm{~m} / \mathrm{s}^{2}$ .
D) $1.08 \mathrm{~m} / \mathrm{s}^{2}$ .
E) $1.83 \mathrm{~m} / \mathrm{s}^{2}$ .