- AStatement II alone is sufficient but Statement I alone is not
- BBoth statements together are needed (neither alone is sufficient)
- CEither statement alone is sufficient
- DStatement I alone is sufficient but Statement II alone is not
Step-by-Step Solution
II gives Nandini's age as 15 but says nothing of the grandmother; I gives only the gap. Together, the grandmother is 15 + 52 = 67 years old.
Answer: B) Both statements together are needed (neither alone is sufficient)