A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. the motion of the particle takes place

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follow that- (A) (B) lts velocity is constant Its acceleration is constant (C) Its kinetic energy is constant (D) It moves in a circular path