The binding energy per nucleon of deuteron \(\left({ }_1^2 \mathrm{H}\right)\) and helium nucleus \(\left({ }_2^4 \mathrm{He}\right)\) is 1.1 MeV and 7 MeV respectively. If two deuteron nuclei react to form a single helium nucleus, then the energy released is:
1
13.9 MeV
2
26.9 MeV
3
23.6 MeV
4
19.2 MeV