XDF 蓝皮一题请教各位

wynyy2000

while short-term price promotions can have legitmate uses, such as reducing excess inventory, it is the recognizable increase in sales that is their main attraction to management, which is therefore reluctant to abandon this strategy despite its effect on the bottom line.

The passage suggests that evidence for price promotions' "effect on the bottom line" is provided by
A the frequency with which price promotions occur
B price promotions' inability to attract new custmers
C price promotions; recognizable effect on sales.
个人理解："effect on the bottom line" 与原文的main attraction to management 对应，个人认为C更靠谱，答案是A，我觉得frequency概念的引入属于irrelevant to the topic

请教各位意见！！