If in a nuclear fusion process the masses of the fusing nuclei be $m_1$ and $m_2$ and the mass of the resultant nucleus be$ m_3$, then

Question

( A ) $m_3 = |m_1–m_2|$
( B ) ${m_3}<(m_1+m_2) $ <br/> ( C ) $m3 > (m_1 + m_2)$
( D ) $m_3 = m_1 + m_2$