Lattice enthalpy for $NaCl$ is $+788 \ kJ \ mol^{-1}$ and $\Delta H_{\text{hyd}}^{\circ} = -784 \ kJ \ mol^{-1}$. The enthalpy of solution of $NaCl$ is:

• A
  $+572 \ kJ \ mol^{-1}$
• B
  $+4 \ kJ \ mol^{-1}$
• C
  $-572 \ kJ \ mol^{-1}$
• D
  $-4 \ kJ \ mol^{-1}$