During an adiabatic process,the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio of $\frac{C_p}{C_v}$ for the gas is:

  • A
    $\frac{5}{3}$
  • B
    $\frac{3}{2}$
  • C
    $\frac{7}{5}$
  • D
    $\frac{9}{7}$

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