At `25^(@)C`, the dissociation constant of a base. BOH is `1.0xx10^(-12)`. The concentration of hydroxyl ions in `0.01`M aqueous solution of the base would be
A. `1.0 xx 10^(-6)` mole`L^(-1)`
B. `1.0 xx 10^(-7)` mole`L^(-1)`
C. `2.0 xx 10^(-6)` mole`L^(-1)`
D. `1.0 xx 10^(-5)` mole`L^(-1)`