- AStatement I alone is sufficient but Statement II alone is not
- BEither statement alone is sufficient
- CStatement II alone is sufficient but Statement I alone is not
- DBoth statements together are needed (neither alone is sufficient)
Step-by-Step Solution
I makes P a son sharing Q's father, so P is Q's brother. II only shows P shares a mother with Q but leaves P's gender unknown, so P could be brother or sister.
Answer: A) Statement I alone is sufficient but Statement II alone is not