Circular motions of charged particles

The above shows the paths of two charged particles $$A$$ and $$B$$ with the same mass after they enter a uniform magnetic field, where they travel along their respective circular orbits. Both $$A$$ and $$B$$ enter and exit the magnetic field at right angles at the same time. If the quantity of the electric charge and the kinetic energy of the charged particle $$A$$ are $$+q$$ and $$E_0,$$ respectively, then which of following could be the quantity of the electric charge and the kinetic energy, respectively, of the charged particle $$B?$$

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