How many books were old this month in your shop?
(I) Last month ... 87 books were sold.
(II) The number of books sold this month was 2 times that of last month.

A

If the statement I alone is sufficient to answer the question.

B

If the statement II alone is sufficient to answer the question.

C

If both the statements I and II are sufficient to answer the question but neither statement alone is sufficient

D

It both the statements I and II together are not sufficient to answer the question and. additional data is required.