Nuclear fusion

Here it is already mentioned that 1u= 931MeV. Then how can the value of energy liberated per u be different? I am confused. Please explain.

@anag
per u is not given. value of 1 u is given. now you need to count u in reaction

@anag U is unit of mass. 1u=931Mev implies energy associated with 1u mass. Ques is asking total energy per u. they are different.