Let `sigma_(1) , sigma _(2)` be the standard deviations of two distributions `D _(1)and D_(2)` respectively and `D_(1)` be more consistent then `D_(2)` If the means of `D_(1) and D_(2)` are same, then the percentage increase in the standard deviation of `D_(2)` over the standard deviation of `D_(1)` is

Options

A. `(sigma_(1)-sigma_(2))/(sigma _(2))xx100`
B. `(sigma_(1)-sigma_(2))/(sigma _(1))xx100`
C. `(sigma_(2)-sigma_(1))/(sigma _(2))xx100`
D. `(sigma_(2)-sigma_(1))/(sigma _(1))xx100`

Answer

D