The given figure represents the Nitrogens fixation. See the diagram and select the correct option

I. Nitrogenase catalyses the reaction
II. The formation of ammonia is a reductive process
III. One molecule of nitrogen produces two molecules of ammonia
IV. Nitrate raductase catalyse the reaction
V. Formation of ammonia is an oxidation process
VI. One molecule of nitrogen produces one molecule of ammonia

Options

A. III, IV and V are correct
B. I, V and VI are correct
C. IV, V and VI are correct
D. I, II and III are correct