问题如下：
Which of the following factors would most likely be a limitation of applying business cycle analysis to global industry analysis?
选项：
A.Some industries are relatively insensitive to the business cycle.
B.Correlations of security returns between different world markets are relatively low.
C.One region or country of the world may experience recession while another region experiences expansion.
解释：
C is correct.
Varying conditions of recession or expansion around the world would affect the comparisons of companies with sales in different regions of the world.
请问老师A为啥不对，谢谢
