Which of the following applies to tracking Workers on an SOW?

Which of the following applies to tracking Workers on an SOW?
A . SOW Workers are required for time and expense purposes.
B . Only buyer companies that use the contingent workflow can add Workers to their SOW.
C . Only buyer companies that use the SOW Bid functionality can add Workers to their SOWS.
D . SOW Workers are optional when buyers utilize SOWS.

Answer: A