The activity of a sample reduces from \( \mathrm{A}_{0} \) to \( \mathrm{A}_{0} / \sqrt{3} \) in...

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The activity of a sample reduces from \( \mathrm{A}_{0} \) to \( \mathrm{A}_{0} / \sqrt{3} \) in one hour. The activity after 3 hours more will be
(A) \( \frac{\mathrm{A}_{0}}{3 \sqrt{3}} \)
(B) \( \frac{\mathrm{A}_{0}}{9} \)
(C) \( \frac{\mathrm{A}_{0}}{9 \sqrt{3}} \)
(D) \( \frac{\mathrm{A}_{0}}{27} \)
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