According to the second law of thermodynamics,which of the following is true for a spontaneous process?

• A
  $\Delta S_{\text{total}} > 0$
• B
  $\Delta S_{\text{total}} = 0$
• C
  $\Delta S_{\text{total}} > \Delta S_{\text{system}}$
• D
  $\Delta S_{\text{total}} < 0$