Is the triangle with sides a, b and c equilateral?
I. $$a^2 = b^2 + c^2$$
II. $$a < b + c$$

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.