For a given distribution of marks,the mean is $35.16$ and its standard deviation is $19.76$. The coefficient of variation is:
- A$\frac{35.16}{19.76}$
- B$\frac{19.76}{35.16}$
- C$\frac{35.16}{19.76} \times 100$
- D$\frac{19.76}{35.16} \times 100$
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