What is the average of a, b, c and 5?
I. 5(a + b + c) + 4 = 45.
II. a + b = c + d.

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.