She spent 25 dollars on the watch chain.It means ___.

A．she paid 25 dollars on the watch chain

B．the watch chain cost her 25 dollars

C．it took her 25 dollars buying the watch chain

D．she bought the watch chain of 25 dollars

国际贸易通常的贸易条件有（）。

A.工厂交货

B.船上交货

C.船边交货

D.运保费在内交货