Is $$\triangle ABC$$ right-angled ?
I. A lies on the circle with BC as a diameter.
II. A, B and C lie on a circle.

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.