Question : Which step sorts the observations of a permanent SAS data set by two variables and stores the sorted observations in a temporary SAS data set? 1. proc sort out=EMPLOYEES data=EMPSORT; by Lname and Fname; run; 2. proc sort data=SASUSER.EMPLOYEES out=EMPSORT; by Lname Fname; run; 3. Access Mostly Uused Products by 50000+ Subscribers run; 4. proc sort data=SASUSER.EMPLOYEES out=SASUSER.EMPSORT; by Lname and Fname; run;