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The following SAS program is submitted: data work.test; Author = 'Agatha Christie'; First = substr(scan(author,1,' ,'),1,1); run; Which one of the following is the length of the variable FIRST in the output data set?
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DEAWS
1 month, 1 week agoMandar77
1 year, 9 months agomhminkov
2 years, 9 months agopiycc09
3 years, 2 months ago