Energy released when two deuterons $\left({ }_{1} H^{2}\right)$ fuse to form a helium nucleus $\left({ }_{2} H e^{4}\right)$ is :
(Given : Binding energy per nucleon of ${ }_{1} H^{2}=1.1 \mathrm{MeV}$ and binding energy per nucleon of ${ }_{2} \mathrm{He}^{4}=7.0 \mathrm{MeV}$ )