What is $$a : b : c$$ ?
I. $$a^{2} + 4b^{2} = 4ab$$
II. $$a^{2} + 5b^{2} + 4c^{2} = 4b(a+c)$$

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.