The mass defect for the nucleus of helium is 0.0302 amu. The binding energy per nucleon for helium is x MeV. Find the value of x rounded off to the nearest integer. (Take 1 amu = 930 MeV/c²).

a) 5 MeV
b) 6 MeV
c) 7 MeV
d) 8 MeV