The relation between $\gamma ,\,\eta $ and $K$ for a elastic material is
  • A$\frac{1}{\eta } = \frac{1}{{3\gamma }} + \frac{1}{{9K}}$
  • B$\frac{1}{K} = \frac{1}{{3\gamma }} + \frac{1}{{9\eta }}$
  • C$\frac{1}{\gamma } = \frac{1}{{3K}} + \frac{1}{{9\eta }}$
  • D$\frac{1}{\gamma } = \frac{1}{{3\eta }} + \frac{1}{{9K}}$
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