A radioactive nuclei A produces a daughter “B”. Which decays to a stable product “C” then the variation of a population of A,B & C with time is

Initially population of A is large. It decays fast. Population of  B build up fast. With decreasing population of A the rate of formation of B decreases. While it’s rate of decay will keep rising till its population get’s maximum, population of B starts decreasing afterward due to small rate of formation of B. Population of C rises and eventually becomes N0