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What happens to fats and oils when they are oxidised over time?

Question
What happens to fats and oils when they are oxidised over time?
They become more nutritious
They become rancid, with a changed smell and taste
They turn into water
They solidify permanently
Answer
They become rancid, with a changed smell and taste
Detailed Explanation
When fats and oils are oxidised, they become rancid, and their smell and taste change for the worse.
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