A radioactive nucleus has decay constant λ. Which statements are correct?

Select all that apply

• Option A

  The probability of survival up to time t is exp(-λt)

• Option B

  The probability of decay before time t is 1-exp(-λt)

• Option C

  If the nucleus has survived up to some instant, the probability that it decays during a very small following interval dt is approximately λdt

• Option D

  The probability per unit time of decay increases continuously as the nucleus becomes older