A: I prefer western food .It’s a kind of healthy food.
B: ?But western food is said to be high in sugar and fat .
A. Is that right
B. How do you know that
C. Do you really think so
D. Who told you that
网友回答
A. Is that right
B. How do you know that
C. Do you really think so
D. Who told you that
解析：答话人对前者的观点提出质疑，并提出自己的观点。Do you really think so?你真得这样认为吗？故选C。