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Which of the following programs correctly creates a series of macro variables whose names are values of the data set variable Course_code, and then indirectly references one of those macro variables in a later step?

data _null_;
    set certadv.courses;
    call symputx('course_code', trim(course_title));
run;

%let crsid=C005;

proc print data=certadv.schedule noobs label;
    where course_code="&crsid";
    var location begin_date teacher;
    title1 "Schedule for &&&crsid";
run;

data _null_;
    set certadv.courses;
    call symputx(course_code,(course_title));

%let crsid=C005;

proc print data=certadv.schedule noobs label;
    where course_code="&crsid";
    var location begin_date teacher;
    title1 "Schedule for &c005";
run;

data _null_;
    set certadv.courses;
    put(course_code, trim(course_title));
run;

%let crsid=C005;

proc print data=certadv.schedule noobs label;
    where course_code="&crsid";
    var location begin_date teacher;
    title1 "Schedule for &&&crsid";
run;

data _null_;
    set certadv.courses;
    call symputx(course_code, trim(course_title));
run;

%let crsid=C005;

proc print data=certadv.schedule noobs label;
    where course_code="&crsid";
    var location begin_date teacher;
    title1 "Schedule for &&&crsid";
run;