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The following SAS program is submitted:


data work.passengers;
if OrigPassengers = . then OrigPassengers = 100; TransPassengers = 100;
OrigPassengers = .;
NonPaying = 10;
TotalPassengers = sum (OrigPassengers, TransPassengers);
run;


Which one of the following is the value of the TOTALPASSENGERS variable in the output data set?

A. 200
B. . (missing numeric value)
C. 110
D. 100


Answer: D