If P, A, B are three points on a circle, what is $$\angle APB ?$$
I. AB is the diameter of the circle.
II. The sum of the angles of $$\triangle APB$$ is $$180^\circ$$

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.