D.
       What is the ketogenic diet? If you want to lose weight, you may have an interest in learning more about it. People will eat much oil and less sugar and rice when they choose the ketogenic diet. Eating a lot of oil helps a person not to feel hungry for a long time. At the same time, their bodies burn more fat by themselves when people stop eating sugar and rice.
      To lose weight quickly, many people like to drink a kind of special coffee in the morning. They put a spoon of butter and a spoon of oil into black coffee. Then they drink one or two cups for breakfast, so they don't feel hungry before noon.
      The ketogenic diet helps people lose a lot of weight fast, but it is quite dangerous. If you are on the ketogenic diet more than 1.5 months, you may be seriously sick. What's worse, you may get a lot of your weight back after that in a short time. Remember to talk to your doctor before you give it a try.
      What is the best way to lose weight? Exercise more and eat less. Though it sounds nothing special, it is the slower but safer way to lose weight and keep healthy at the same time.
【題組】

13. What SHOULDN'T you eat if you are on the ketogenic diet?
(A)

(B)

(C)

(D)