Why does the program rail to execute?

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;

Why does the program rail to execute?
A . The SORT procedures contain invalid syntax.
B . The merged data sets are not permanent SAS data sets.
C . The RUN statement was omitted alter each or the SORT procedures.
D . The data sets were not merged in the order by which they were sorted.

View Answer

Answer: D