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Physics Magnetism,Magnetic Effects Of Current Level: University

 Lorentz force
An electron travels through qa region of space with no acceleration. Which one of the following statements is the best conclusion?
(a) Both E and B must be zero in that region
(b) E must be zero, but B might be non- zero in that region
(c) B must B might both be non-zero but they must be mutually perpendicular
(d) B must be zero but E might be non-zero in that region
(e) E and B might both be non- Zero but they must point in opposite directions.