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For a particle moving along a straight line, the displacement \( x \) depends on time \( t \) as \( x=A t^{3}+B t^{2}+C t+D \). The ratio of its
\( \mathrm{P} \) initial velocity to its initial acceleration depends on :
\( \mathrm{W} \)
(A) \( A \& C \)
(B) \( B \& C \)
(C) \( C \)
(D) \( C \) and \( D \)
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