For $$a, b \epsilon R$$, if the number of positive integral divisors of the positive integer 4 ab is 3, then what is the value of b?
I. a = 5
II. a is a prime number.

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.