In how many hours can A alone complete the piece of work? I. B alone can complete the piece of work in 28 h. II. A, B and C together can complete the piece of work in 18 h.
A) If the data in statement I alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question
B) If the data in statement-II alone is sufficient to answer the question, while the data in statement I alone is not sufficient to answer the question
C) If the data in statement I alone or in statement II alone is sufficient to answer the question
D) If the data in both the statements I and II is not sufficient to answer the question
E) If the data in both the statements I and II together is necessary to answer the question.
Correct Answer: D