The following SAS program is submitted:
proc sort data=work.employee;
by descending fname;
proc sort data=work.salary;
by descending fname;
data work.empdata;
merge work.employee
work.salary;
by fname;
run;
Which one of the following statements explains why the program failed execution?
A. The SORT procedures contain invalid syntax.
B. The merged data sets are not permanent SAS data sets.
C. The data sets were not merged in the order by which they were sorted.
D. The RUN statements were omitted after each of the SORT procedures.
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