In dietary terminology, how do 'fats' and 'oils' primarily differ?

• A. Fats are any lipids that are digestible by lipase enzymes in the stomach while oils are not digestible until they reach the intestinal phase where bile acts on them.
• B. Fats always contain cholesterol while oils never contain any lipid molecules with ring structures, which explains the dietary separation between the two terms.
• C. They differ by physical state at room temperature: fats are solids (e.g., butter), oils are liquids (e.g., olive oil).
• D. Fats refer exclusively to plant-derived triglycerides while oils refer exclusively to animal-derived triglycerides, and this botanical provenance is the defining distinction.

Answer: (C)