The variation of decay rate of two radioactive samples \( A \) and ...

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The variation of decay rate of two radioactive samples \( A \) and \( B \) with time is shown in Fig.
\( \mathrm{P} \)
Which of the following statements are true?
W
(a) Decay constant of \( A \) is greater than that of \( B \), hence \( A \) always decays faster than \( B \).
(b) Decay constant of \( \mathrm{B} \) is greater than that of \( \mathrm{A} \) but its decay rate is always smaller than that of \( A \).
(c) Decay constant of \( A \) is greater than that of \( B \) but it does not always decay faster than \( B \).
(d) Decay constant of \( \mathrm{B} \) is smaller than that of A but still its decay rate becomes equal to that of \( \mathrm{A} \) at a later instant.
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