17. Cathy: You grow taller every year. How did you make it?
Irene: Maybe it’s good diet and exercise.
Cathy: __________ These are the two things I never do.
Irene: Well, it’s never too late to eat well and exercise.
(A) That’s the point.
(B) Nothing is special.
(C) I eat a healthy diet.
(D) I exercise very often.