If a, b, c are positive integers, is their product abc even?
I. a + b + c is odd
II. a + c is odd

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 statements alone is sufficient.

D

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