我觉得选D,可查了几处的答案都是A,为什么?
17.Given the followingdata step:
data WORK.GEO;
infile datalines;
input City $20.;
if City='Tulsa' then
State='OK';
Region='Central';
if City='Los Angeles' then
State='CA';
Region='Western';
datalines;
Tulsa
Los Angeles
Bangor
;
run;
After data stepexecution, what will data set WORK.GEO contain?
A.
City State Region
----------- ----- -------
Tulsa OK Western
Los Angeles CA Western
Bangor Western
B.
City State Region
----------- ----- -------
Tulsa OK Western
Los Angeles CA Western
Bangor
C.
City State Region
----------- ----- -------
Tulsa OK Central
Los Angeles CA Western
Bangor Western
D.
City State Region
----------- ----- -------
Tulsa OK Central
Los CA Western
Bangor
Answer: A
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