Choose the CORRECT statements. A standing wave is resulted from the superposition of two waves in such a way both waves:

I. have the same direction.
II. are opposite in direction.
III. have the same frequency.
IV. have different frequency.
V. have the same amplitude.
VI. have different amplitude

A. I, III and V

B. II. IV and VI

C. I, IV and V

D. II, III and V

E I and III

F. Ill and V​