How should the Admin reference a specific Error Condition record in the text of the Advanced Condition field?

An Admin is creating a Product Rule with an Advanced Condition.

How should the Admin reference a specific Error Condition record in the text of the Advanced Condition field?
A . API name of the field in the Tested field.
B . Salesforce ID of the Error Condition record.
C . Value of the Index field.
D . Value of the Condition # field.

Answer: C