clarification in practice exam questions

[Parvathychand]

Hello,

 In the practice exam i came across this programming question about sorting.

my answer was :

data results.output27a;
set cert.input27;
country=upcase(country);
if country in("US");
run;

proc sort data=output27a;
by state descending postal_code employee_id;
run;

which gave the answer for employee_id in obs 100 is 121030

but the correct answer was 120781 which used in code

proc sort data=cert.input27
out=results.output27a(where=(upcase(country)='US'));
  by state descending Postal_Code employee_ID;
run;

[Astounding]

Can't be sure what your question is.  But one fault with your program is that you sort the data set output27a.  But your program doesn't create that data set, it only creates results.output27a.  Just a typo?  Or truly a different data set?