According to the first law of thermodynamics,which of the following is correct? (Where $q =$ heat supplied to the system and $W =$ work done by the system)

  • A
    $\Delta U = q - W$
  • B
    $\Delta U = q + W$
  • C
    $\Delta U = \Delta q + \Delta W$
  • D
    $\Delta U = \Delta q + W$

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