Question 21M.1A.SL.TZ2.22

During the nuclear fission of nucleus X into nucleus Y and nucleus Z, energy is released. The binding energies per nucleon of X, Y and Z are $B_{\text{X}}$ , $B_{\text{Y}}$ and $B_{\text{Z}}$ respectively. What is true about the binding energy per nucleon of X, Y and Z?

A.  $B_{\text{Y}}$ > $B_{\text{X}}$ and $B_{\text{Z}}$ > $B_{\text{X}}$

B.  $B_{\text{X}}$ = $B_{\text{Y}}$ and $B_{\text{X}}$ = $B_{\text{Z}}$

C.  $B_{\text{X}}$ > $B_{\text{Y}}$ and $B_{\text{X}}$ > $B_{\text{Z}}$

D.  $B_{\text{X}}$ = $B_{\text{Y}}$ + $B_{\text{Z}}$