- AEither statement 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
- DBoth statements together are needed (neither alone is sufficient)
Step-by-Step Solution
Statement I gives A > B and A > C but says nothing about D; statement II gives only D > A. Together D > A > B, C, so D is tallest, but neither alone settles it.
Answer: D) Both statements together are needed (neither alone is sufficient)