The dissociation constant of a base $BOH$ at $25^{\circ} C$ is $1.0 \times 10^{-12}$. The concentration of $OH^{-}$ in a $0.01 \ M$ aqueous solution is .......
- A$1.0 \times 10^{-5} \ M$
- B$1.0 \times 10^{-7} \ M$
- C$2.0 \times 10^{-6} \ M$
- D$1.0 \times 10^{-14} \ M$
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