A particle moves in XY plane according to the relations $$x = kt$$ and $$y = kt(1 - pt)$$ where k and p are positive constants and t is time. Therefore,

A

the trajectory of the particle is a parabola

B

the particle has a constant velocity along X axis

C

the force acting on the particle remains in the same direction even if both k and p are negative constants

D

the particle has a constant acceleration along $$-Y$$ axis