How much time will it take for two pipes A and B to fill a tank which is half full?
I. A can fill the empty tank in 12 minutes.
II. B can empty the full tank in 8 minutes.

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

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