Two particles of masses `m_a & m_b` and same charge are projected in a perpendicular magnetic field. They travel along circular paths of radius `r_a and r_b` such that `r_a > r_b`. Then, which is true?
Options:
(a) `m_av_a > m_bv_b`
(b) `m_a > m_b and v_a > v_b`
(c) `m_a=m_b and v_a > v_b`
(d) `m_bv_b > m_av_a`