To answer the question, 'Who is the youngest person in the group", which of the following statement is superfluous?

As per given condition,
Arranging according to age,
Kamini is younger than Rupa.
1. K < R
Pooja is younger than Monika.
2. P < M
Rupa and Monika are of the same age.
3. R = M
Neelam is elder to Rupa.
4. N > R
From 1 and 2,
5. R = M >K or P
from 5 and 4,
6. N > R = M >K or P
Persons are arranged by Age
Neelm > Rupa = Monika > Pooja > Kamini
or Neelam > Rupa = Monika > Kamini > Pooja
Only Statement I is superfluous.