题目内容：
(1). Why is it useful to carry enough 25-cent coins with you?
(本题2.0分)
A、
They can act as small change for the-exact bus fares.
B、
There is- generally no problem in using them in Canada.
C、
As a basic unit of money, they are gradually gaining in usage.
D、
They may come in handy for pay phones or laundry machines.
参考答案：