Q. In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done

• (A) Because of difficulty in manufacturing cam profile
• (B) Because of loose contact of follower with cam surface
• (C) In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
• (D) Because the uniform velocity motion is a partial parabolic motion