单选题 Protein, found in meat and cheese, is used for tissue building and in the developed countries most people eat about 110g daily, which is a good deal more than the recommended minimum of 70g a day. Animal fats, e. g. buyer are also good sources of energy, but are sometimes held to cause increased cholesterol levels in the blood (which may lead to fatty deposits in the arteries) and are therefore best avoided by people suffering from certain forms of heart disease, vegetable fats recommended as a substitute.
Who should avoid taking in animal fat?

• A. People who are allergic to animal fat.
• B. People who have certain kinds of heart disease.
• C. People who are overweight.
• D. People who are too thin.