After 200 days the activity of a radioactive sample reduces to \( 8000 \mathrm{dps} \). After an...

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After 200 days the activity of a radioactive sample reduces to \( 8000 \mathrm{dps} \). After another 100 days the activity reduces to
\( \mathrm{P} \) \( \frac{8000}{\sqrt{2}} \) dps. It can be said that :

W
(A) Initial activity of the sample was \( 8000 \sqrt{2} \mathrm{dps} \)
(B) Initial activity of the sample was \( 16000 \mathrm{dps} \)
(C) Halflife of the sample is 200 days
(D) After yet another 100 days the activity will reduce to \( 4000 \mathrm{dps} \)
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