Is a + b ≠ 0, if a and b are real numbers ?
I. ab = 0
II. $$a^2 + b^2 = 0$$

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.