- AEither statement alone is sufficient
- BStatement II alone is sufficient but Statement I alone is not
- CBoth statements together are needed (neither alone is sufficient)
- DStatement I alone is sufficient but Statement II alone is not
Step-by-Step Solution
By I, the only son of T's paternal grandfather is T's father, so P (a son) is T's brother. By II, T is P's sister but P's gender is unknown, so I alone suffices.
Answer: D) Statement I alone is sufficient but Statement II alone is not