When a proton is released from rest in a room,it starts with an initial acceleration $$a_{o}$$ towards west. When it is projected towards north with a speed $$\nu_{0}$$ it moves with an initial acceleration $$3a_{0}$$ toward west. The electric and magnetic fields in the room are:

A

$$\frac{ma_{0}}{e}$$ east, $$\frac{3ma_{0}}{e \nu_{0}} down$$

B

$$\frac{ma_{0}}{e}$$ east, $$\frac{2ma_{0}}{e \nu_{0}} up$$

C

$$\frac{ma_{0}}{e}$$ east, $$\frac{2ma_{0}}{e \nu_{0}} down$$

D

$$\frac{ma_{0}}{e}$$ east, $$\frac{3ma_{0}}{e \nu_{0}} up$$