At a specific instant emission of radioactive compound is deflected in a magnetic field. The compound can emit : <br> (i) electrons <br> (ii) protons <br> (iii) $He^{2+}$ <br> (iv) neutrons <br> The emission at the instant can be :

Question

( A ) $i, ii, iii, iv$
( B ) $iv$
( C ) $i, ii, iii$
( D ) $ii, iii$