The electron moving at rate of 2 x 107 in uniform magnetic field of 1.10 x 10-3 then the radius of an orbit will be

Question : The electron moving at rate of 2 x 10⁷ in uniform magnetic field of 1.10 x 10^-3 then the radius of an orbit will be
(A). 9.4 x 10^-2m
(B). 9 x 10^-2m
(C). 5.4 x 10^-2m
(D). 1.4 x 10^-2m