What is the ratio of the length to the diagonal of a rectangle whose dimensions are a and b?
I. $$4a^2 + 9b^2 = 12 ab$$
II. a > 0, b > 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.