Task: Property Constraint Reasoning (ontology: Legal/LKIF_Core_Ontology)

The property 'efficacy' applies to instances of 'Modification', and 'Textual Modification' is a subclass of 'Modification'. Which class can appear as the value of 'efficacy' for instances of 'Textual Modification'?

A. Application Date
B. Existence Date
C. Efficacy Interval
D. Enter in Force Date

Answer: Efficacy Interval