A radioactive nuclide can decay simultaneously by two different processes which have decay constant `lambda_(1)` and `lambda_(2)`. The effective decay constant of the nucleide is `lambda`

Options

A. `lamda=lamda_(1)+lamda_(2)`
B. `lamda=(1)/(2) (lamda_(1)+lamda_(2))`
C. `(1)/(lamda)=(1)/(lamda_(1))+(1)/(lamda_(2))`
D. `lamda=sqrt(lamda_(1)lamda_(2))`

Answer

a