Sone lal has 'n' magical eggs whose average weight is 'k' gm. Each of the 'n' eggs produces 'n' eggs next day such that the average weight of 'n' eggs produced is same as that of the parental (previous generation) egg for each 'n' groups individually i.e., such egg produces 'n' eggs in its next generation is same as the weight of the mother egg. This process is continued without any change in pattern. What is the total weight of all the eggs of `r^(th)` generation, where the initial number of eggs with Sone lal are considered as the eggs of first generation :

Options

A. rnk
B. `n^rk`
C. `nk^r`
D. `(n^r+1)k`

Answer

B