How does SAP S/4HANA determine if a characteristic value is valid in Profitability Analysis?

How does SAP S/4HANA determine if a characteristic value is valid in Profitability Analysis?
A . By defining the characteristic value as a value field
B . By defining the characteristic value in the field catalog
C . By defining the characteristic value in the check table
D . By defining the characteristic value as a key figure

Answer: C