A rigid uniform stick of length L is restricted to move on the xy plane. A point charge q is fixed on one end of the stick and a point charge -q is fixed on the other end. At a particular moment the velocity of the stick's centre is v - v,i + vyJ. the stick is at an angle e to the x-axis and is spinning around its centre at angular velocity o. A uniform magnetic field B is applied along the positive z-axis. Then (A) Fron the dipole = aqBL( cosel + sinej) (B) F. on the dipole - -cqBL(cosei + sinej (C) Tom = qBL(V, cose + Vy sinejk (D) Fam - -qBL(V, coso + V sino)k