A particle of mass M and positive charge Q, moving with a constant velocity u1 = 4\(\hat{i}ms^{-1}\) ,enters a region of uniform static magnetic field normal to the x-y plane. The region of the magnetic field extends from x = 0 to x = L for all values of y. After passing through this region, the particle emerges on the other side after 10 milliseconds with a velocity \(\vec{u}_2\) = 2(\(\sqrt{3}\hat{i}+\hat{j}\)) m/s-1 . The correct statement(s) is (are)
(A) The direction of the magnetic field is -z direction.
(B) The direction of the magnetic field is +z direction.
(C) The magnitude of the magnetic field \(\frac{50\pi M}{3Q}\) units.
(D) The magnitude of the magnetic field is \(\frac{100\pi M}{3Q}\)
