In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? l m _ o _ n m _ l _ n _ _ n m l
Weight of C is twice the weight of M. Weight of M is 1/9 of the weight of R. Weight of R is 5/2 of the weight of K. Weight of K is 1/3 of the weight of G. Who is the second lightest?