In given figure at t = 0, a charged particle of mass m and charge q enters in the region-II.

Select all that apply

• Option A

  If q>0, particle enters region I after leaving region II

• Option B

  If q<0, particle leaves region II at t=2πm/(|q|B₀)

• Option C

  If q>0, particle re-enters region II at t=3πm/(4|q|B₀)

• Option D

  Particle never leaves region II