The molar specific heats of an ideal gas at constant pressure and volume are denoted by $C_p$ and $C_V$ respectively. If $\gamma=\frac{C_p}{C_V}$ and $R$ is the universal gas constant, then $C_V$ is equal to

• A

  $\frac{1+\gamma}{1-\gamma}$
• Correct answer
  B

  $\frac{R}{(\gamma-1)}$
• C

  $\frac{(\gamma-1)}{R}$
• D

  $\gamma R$

Hence, the correct answer is option: 'B'.