When iron is left exposed in open air, it gets rusted. Which constituent(s) of air is /are responsible for rusting iron? (i) Oxygen gas present in air (ii) Moisture present in air (iii) Carbon dioxide gas present in air Select the correct answer using the code given below:

• A. (i) only
• B. (ii) only
• C. (i) and (ii)
• D. (ii) and (iii)