Which of the following contains fewer calories

A．people increase the number of calories they eat per day and gain weight
B．the "low fat" yogurt group ate less calories later than the other group
C．two groups ate the same amount of yogurt
D．people who eat low fat yogurt will not gain weight

A．To avoid being overweight, people should eat nonfat food.
B．Nonfat and regular food have no difference in calories.
C．Americans think it necessary to count calories of food.
D．We can eat nonfat food as much as we like.