一道SAS BASE 123里面的题目

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QUESTION 98
The following SAS program is submitted:
footnote1 'Sales Report for last Mounth';
footnote2 'Selected Products Only';
footnote3 'All Regions';
footnote4 'All Figure in Thousands of Dollars';
proc print data = sasuser.shoes;
footnote2 'All products';
run;
Which one of the following contains the footnote text that is displayed in the report?
A. All Products
B. Sales Report for Last Month
All Products
C. All Products
All Regions
All Figures in Thousands of Dollars
D. Sales Report for Last Month
All Products
All Regions
All Figures in Thousands of Dollars
Answer: B

请问这个题目要如何考虑？完全没有思路。请大家帮帮忙，谢了！

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关键词：SAS base Base thousands following products following products report

Changing Titles and Footnotes
TITLEn or FOOTNOTEn
􀂄 replaces a previous title or footnote with the same
number
􀂄 cancels all titles or footnotes with higher numbers.  
书上讲到footnote是这样讲的，那在你这个题目里，footnote2 修改了之前的footnote2，并取消了footnote3及以上，而footnote1并没有变化，所以结果应该是B。我是初学者，有问题可以一起讨论

二妞果果 发表于 2015-2-27 15:49
Changing Titles and Footnotes
TITLEn or FOOTNOTEn
􀂄 replaces a previous title or footnote ...

好的谢谢!我也是初学者哈哈