- ABoth statements together are needed (neither alone is sufficient)
- BStatement I alone is sufficient but Statement II alone is not
- CStatement II alone is sufficient but Statement I alone is not
- DEither statement alone is sufficient
Step-by-Step Solution
From I, R is the son of Q and P (a brother, hence male) is another child, so P is the son of Q. II says nothing about P, so it cannot fix the relation.
Answer: B) Statement I alone is sufficient but Statement II alone is not