A. Use two separate Calculation Steps with the Conditional Step property selected: reference just the isCustomer variable in the Conditional syntax (no comparison necessary)

B. Use two separate Calculation Steps with the Conditional Step property selected: compare the isCustomer variable directly to the literal true and false values in the Condition syntax.

C. Use a single Calculation Steps with IF statement directly in the formula definition to reference the isCustome variable and conditionally perform the appropriate calculation.

D. Use two separate Calculation Steps with the Conditional Step property selected: use the ISTRUE(isCustomer) and NOT (ISTRUE) (isCustomer) functions in the Condition syntax.