42

The following SAS program is submitted:


data numrecords;
infile 'file-specification'; input @1 patient $15. relative $ 16-26 @;
if relative = 'children' then input @54 diagnosis $15. @; else if relative = 'parents' then input @28 doctor $15.
clinic $ 44-53
@54 diagnosis $15. @;
input age;
run;

How many raw data records are read during each iteration of the DATA step during execution?
A. 2
B. 3
C. 4
D. 1