The atomic mass unit (1u) is correctly represented by:

$1u=1.67 × 10^{-27} J/C^2$ $1u=931.5 MeV/C^2$ $1u=931.5 J/C^2$ $1u=9.31 MeV/C^2$

$1u=931.5 MeV/C^2$

The correct answer is Option (2) → $1u=931.5 MeV/C^2$