- AEither statement alone is sufficient
- BBoth statements together are needed (neither alone is sufficient)
- CStatement I alone is sufficient but Statement II alone is not
- DStatement II alone is sufficient but Statement I alone is not
Step-by-Step Solution
I makes M the sister of N's father, i.e. N's paternal aunt. In II, M's own gender is unknown (M merely has a brother), so uncle or aunt cannot be decided.
Answer: C) Statement I alone is sufficient but Statement II alone is not