Can we find the quadratic equation $$ax^2 + bx + c = 0$$?
I. The sum of the roots is given.
II. The difference of the roots is given.

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.