Unprocessed Oils Are Best Stored in Airtight Containers Because

Unprocessed oils are best stored in airtight containers because:

A) exposure to the air will decrease the likelihood of rancidity.
B) airtight storage destroys the natural antioxidants in the oils.
C) points of unsaturation in their molecules are vulnerable to oxidation.
D) this prevents hydrogenation, which makes them less healthful.