Q. Which of the following get corroded by open air due to oxidation?
1. Iron
2. Copper
3. Zinc
4. Aluminium
Select the correct option from the codes given below:

• (A) Only 1 & 2
• (B) Only 2 & 3
• (C) Only 1, 2 & 3
• (D) 1, 2, 3 & 4