If P, Q, R are 3 points on a circle, then what is $$\angle PQR$$
I. $$\angle PQR = 60^\circ$$
II. PR is a diameter of the circle

A

if the statement I alone is sufficient to answer the question.

B

if the statement II alone is sufficient to answerthe 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.