Man: I find this beef tender and delicious. Do you like it? Woman: Sure. It’s my favorite. And I like this fish, too. Man: But you seem to eat like a bird. Question: What does the man mean?（）
A．The woman eats bit by bit. B．The woman eats less than she can. C．The woman eat less than is expected. D．The woman eats less at the expense of her health.