Is the integer 'a' even?
I. 8a is an even integer.
II. 9a is an odd integer.

A

if the statements I alone is sufficient to answer the question.

B

if the statements II alone is sufficient to answer the question.

C

if the statements I and II together 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 an answer the question and additional data is required.