An ideal gas undergoes the process $1 \rightarrow 2$ as shown in the figure, the heat supplied and work done in the process is $\Delta \,\,Q$ and $\Delta \,\,W$ respectively. The ratio $\Delta \,\,Q :$ $\Delta \,\,W$ is
  • A$\gamma : \gamma - 1$
  • B$\gamma$
  • C$\gamma - 1$
  • D$\gamma - 1 \gamma$
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