A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.0 rad/sec^{2} acquires an angular velocity of 5.0 rad/sec. The CD continues rotating at 5.0 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular acceleration. What is the radial acceleration of a point 4.0 cm from the center at the time 25.0 seconds from the start?

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0.47 m/s^{2}

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0.40 m/s^{2}

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0.34 m/s^{2}

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0.24 m/s^{2}

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0.20 m/s^{2}