Two particles P and Q start their journey simultaneously from point A. P moves along a smooth horizontal wire AB. Q moves along a curved smooth track on the inner surface. Q has sufficient velocity at A to reach B always remaining in contact with the curved track. At A, the horizontal component of velocity of Q is same as the velocity of P along the wire. The plane of motion is vertical. If t1 , t2 , are times taken by P and Q respectively to reach B then (Curve is semicircle and AB is diameter)
(A) t1 = t2
(B) t1 > t2
(C) t1 < t2
(D) none of these