Which of the following options is correct for the object having a straight line motion represent...

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Which of the following options is correct for the object having a straight line motion represented by the following graph
[DCE 2004]
(a) The object moves with constantly increasing velocity from \( O \) to \( \mathrm{A} \) and then it moves with constant velocity.
(b) Velocity of the object increases uniformly
(c) Average velocity is zero
(d) The graph shown is impossible
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