大家对这题有印象么？

BROY7

3)Which of the following statements must be true?
Indicate all such statements.
A For 2008 the dollar amount of sales at Store R was greater than that at
each of the other four stores.
B The dollar amount of sales at Store S for 2008 was 22 percent less
than that for 2006.
C The dollar amount of sales at Store R for 2008 was more than 17
percent greater than that for 2006.


B为啥错了。。。
1*（1-7%）*（1-15%）=0.7905

竹林中人

这个题是哪里的？能否告知下出处