What is the value of the variable Total before the first iteration of the data step?

The SAS data set named WORK.SALARY contains 10 observations for each department, and is currently ordered by Department.
The following SAS program is submitted:

What is the value of the variable Total before the first iteration of the data step?
A. The value of the first observation’s Wagerate.
B. 0
C. Missing
D. Cannot be determined from the information given

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