A charged particle with charge q enters region of constant, uniform and mutually orthogonal fields `vecE` and `vecB` , and comes out without any change in magnitude or direction of `vecu`, then

Options

A. `vecv=(vecExxvecB)//E^(2)`
B. `vecv=(vecBxxvecE)//E^(2)`
C. `vecv=(vecExxvecB)//B^(2)`
D. `vecv=(vecBxxvecE)//B^(2)`

Answer

C