— Did Sarah eat good food at a restaurant?

— ______________.[ ]

A. Yes, she did

B. Yes, she is

C. Yes, she does

根据《聚氨脂防水卷材》规定，单组份聚氨酯防水涂料断裂伸长率允许最小值I类为（）%，II类为450%。

A、400；

B、450；

C、500；

D、550。