$P_i, V_i$ and $P_f, V_f$ are initial and final pressures and volumes of a gas in a thermodynamic process respectively. If $PV^n = \text{constant}$, then the amount of work done is

  • A
    minimum for $n = \gamma$
  • B
    minimum for $n = 1$
  • C
    minimum for $n = 0$
  • D
    minimum for $n = \infty$

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