单项选择题

A charge +Q is fixed in position as a small charge +q is brought near it and released from rest. Which best describes the magnitude of the velocity of the charge +q as r, the distance between the charges increases?

A.The magnitude of the velocity will increase, and its rate of increase will also increase.
B.The magnitude of the velocity will increase, but its rate of increase will decrease.
C.The magnitude of the velocity will remain constant.
D.The magnitude of the velocity will decrease, and its rate of decrease will also decrease.
E.The magnitude of velocity will increase, but its rate of decrease will increase.
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