What is the purpose of the FILEVAR=option on the INFILE statement?

The following SAS program is submitted:

data new;

do i=1,2,3

nextfile=compress(‘March’ || |);

infile abc filevar=nextfile

end=eof;

do until (eof);

input dept $sales;

end;

run;

What is the purpose of the FILEVAR=option on the INFILE statement?
A . It names the variable NEXTFILE, whose value is output to the SAS data set NEW
B . It names the variable NEXTFILE, whose values point to an aggregate storage location
C . It names the variable NEXTFILE, whose value is a SAS file reference
D . It names the variable NEXTFILE, whose change in value causes in INFILE statement to open a new input file