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For one complete cycle of a thermodynamic process on a gas as shown in the $P-V$ diagram, Which of following is correct
  • A$\Delta {E_{{\mathop{\rm int}} }} = 0,\,Q < O$
  • B$\Delta {E_{{\mathop{\rm int}} }} = 0,\,Q > 0$
  • C$\Delta \,{E_{{\mathop{\rm int}} }} > 0,\,Q < 0$
  • D$\Delta \,{E_{{\mathop{\rm int}} }} < 0,\,Q > \,0$
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