第五题
The following SAS program is submitted?
data work.sets;
do until (prod gt 6);
prod+1;
end;
run;

which one of the following is the value of the variable PROD in the output data set?
A.5
B.6
C.7
D.8
答案是C，难道不是D？请教一下...先谢谢了啊~