问题
单项选择题
A number of bricks were purchased to build a fireplace, at a cost of 40 cents each, but only
of them were needed. If the unused 190 bricks were returned and their cost refunded, what was the cost of the bricks used to make the fireplace ？（）
A.$76
B.$228
C.$304
D.$414
E.$570
答案
参考答案：B