Which one of the following nuclear reactions is a source of energy in…

${ }_4^9 \mathrm{Be}+{ }_2^4 \mathrm{He} \rightarrow{ }_6^{12} \mathrm{C}+{ }_0^{-1} \mathrm{n}$

${ }_2^3 \mathrm{He}+_2^3 \mathrm{He} \rightarrow{ }_2^4 \mathrm{He}+{ }_1^1 \mathrm{H}+{ }_1^1 \mathrm{H}$

${ }_{56}^{144} \mathrm{Ba}+_{56}^{92} \mathrm{Kr} \rightarrow{ }_{92}^{235} U+_0^{-1} n$

${ }_{26}^{56} \mathrm{Fe}+{ }_{48}^{112} \mathrm{Ca} \rightarrow{ }_{74}^{167} \mathrm{~W}+{ }_0^{-1} \mathrm{n}$