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Coefficients of variation of two distribution are 15 and 20 and their means are 20 and 10 respectively. If their standard deviations are `sigma_1` and `sigma_2` then
A. `3sigma_1=2sigma_2`
B. `sigma_1 lt sigma_2`
C. `2sigma_1 =3sigma_2`
D. None of these

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Correct Answer - 3

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