When a proton is released from rest in room, it starts with an initial acceleration aₒ towards west When it is projected towards north with a speed Vₒ it moves with an initial acceleration 3aₒ towards west. The electric and magnetic fields in the room are :
a. maₒ/e east, 3maₒ/evₒ down
b. maₒ/e east, 3maₒ/evₒ up
c. maₒ/e east, 2maₒ/evₒ down
d. maₒ/e east, 3maₒ/evₒ up