- AStatement I alone is sufficient but Statement II alone is not
- BBoth statements together are needed (neither alone is sufficient)
- CStatement II alone is sufficient but Statement I alone is not
- DEither statement alone is sufficient
Step-by-Step Solution
I makes A and B siblings but leaves A's gender open (brother or sister). II states same parents and A is male, so A is B's brother.
Answer: C) Statement II alone is sufficient but Statement I alone is not