A proton (mass m and charge +e) and an \[\alpha -\]particle (mass 4m and charge +2e) are projected with the same kinetic energy at right angles to the uniform magnetic field. Which one of the following statements will be true [NCERT 1983]

• A.            The \[\alpha -\]particle will be bent in a circular path with a small radius that for the proton
• B.            The radius of the path of the \[\alpha -\]particle will be greater than that of the proton
• C.            The \[\alpha -\]particle and the proton will be bent in a circular path with the same radius
• D.            The \[\alpha -\]particle and the proton will go through the field in a straight line