The project is expected to cost $ 20000. It is necessary to borrow all $ 20000 at the beginning of a five-year project at an interest rate of 10% compounded annually. What is the amount of interest that is paid at the end of the project （）.

A．$12200

B．$32200

C．$10000

D．$2000

三个月内可能成交的顾客称之为（）

A.渴望顾客

B.有望顾客

C.观望顾客

D.潜在顾客