- AEither statement alone is sufficient
- BStatement I alone is sufficient but Statement II alone is not
- CBoth statements together are needed (neither alone is sufficient)
- DStatement II alone is sufficient but Statement I alone is not
Step-by-Step Solution
I makes P a male child of Q's mother, so P is Q's brother. II fixes Q as P's sister but leaves P's gender unknown, so P could be brother or sister.
Answer: B) Statement I alone is sufficient but Statement II alone is not