The variation of decay rate of two radioactive samples A and B with is shown in Fig. Ep.13.2.which of the following statements are true?

Options

A. Decay constant of A is greater than that of B, hence A always decays faster than B.
B. Decay constant of B is greater than that of A but its decay of 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 B is smaller than that of A but still is decay rate becomes equal to that of A at a later instant.