Ratio of specific heats in terms of the degrees of freedom f

1. A.
   $\left( 1 + \frac{f}{3} \right)$
2. B.
   $\left( 1 + \frac{2}{f} \right)$
3. C.
   $\left( 1 + \frac{f}{2} \right)$
4. D.
   $\left( 1 + \frac{1}{f} \right)$

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1. A.
   $\frac{n}{n + 2}$
2. B.
   $\frac{n + 2}{n}$
3. C.
   $\frac{n}{2n + 2}$
4. D.
   $\frac{n}{n - 2}$

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