Check the only correct statement in the following:

  • A
    $A$ body has a constant velocity and still it can have a varying speed.
  • B
    $A$ body has a constant speed but it can have a varying velocity.
  • C
    $A$ body having constant speed cannot have any acceleration.
  • D
    $A$ body in motion under a force acting upon it must always have work done upon it.

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