这是123题的第15题
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. 1
B. 2
C. 3
D. 4

这是70题的第29题
data WORK.INFO;
      infile 'DATAFILE.TXT';
      input @1 Company $20. @25 State $2. @;
      if State=' ' then input @30 Year;
      else input @30 City Year;
      input NumEmployees;
   run;

How many raw data records are read during each iteration of the DATA step?

      A. 1
      B. 2
      C. 3
      D. 4

请问这两题区别在哪儿？为什么70题里的答案是2个，123题里的答案只有1个？谢谢