The binding energy per nucleon of deuteron $$\binom{2}{1}H$$ and helium nucleus $$\binom{4}{2}He$$ is $$1.1$$ MeV and $$7$$ MeV respectively. If two deuteron nuclei react to form a single helium nucleus, then the energy released is

A

$$13.9$$ MeV

B

$$26.9$$ MeV

C

$$23.6$$ MeV

D

$$19.2$$ MeV