—  Jerry, do remember to take the medicine three times a day and stay in bed for two days.

—  ______, Doctor. I will do it as told. [      ]

A. Got it  

B. That's right      

C. That's OK    

D. I think so

产品的竞争能力主要从（）进行分析。

A．成本优势

B．技术优势

C．规模经济优势

D．质量优势