1. Manu is two months older than Sravan,
so, Sarvan+2=Manu.(Sarvan<Manu)
2. Manu is one month younger than Trideep
so Manu+1=Trideep. (Manu<Trideep)
3. Pavan is one month older than Sravan
so Sarvan+1=Pavan.(Sarvan<Pavan<Manu)
From this conditions Sarvan<Pavan<Manu<Trideep.
Option C.