Expression Sets use resources such as variables and constants to hold values used during calculations and rule execution. When an administrator creates or adds a resource in an Expression Set version, the resource is assigned an appropriate data type. Salesforce officially lists Currency as a supported Expression Set resource data type, together with Text, Number, Percent, Date, Date & Time, and Boolean.
Therefore, the administrator should configure the value through Add Resource in the Expression Set , making option C correct. A Currency resource supports numerical comparison operators including equals, not equals, less than, greater than, and their inclusive variants, making it suitable for licensing fee calculations.
Decision tables can also contain currency-compatible fields in supported Business Rules Engine scenarios, but the question asks specifically where the administrator establishes the data type for a resource within an Expression Set . That configuration occurs in the resource definition rather than through OmniScript options.
Salesforce explains that variables and constants are resources that hold dynamic or fixed values and are used as inputs, outputs, and intermediate values throughout expression-set execution.
Process Builder entry criteria are unrelated to Business Rules Engine resource typing.
Study Guide Reference: Public Sector Solution Product Configuration – Business Rules Engine; Expression Sets; Resource Manager; variables and constants; Currency data type; licensing fee calculations.
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