Task: Property Constraint Reasoning (ontology: Arts_Media_Entertainment/CIDOC_CRM)

The property 'P50 has current keeper' applies to instances of 'E18 Physical Thing', and 'E26 Physical Feature' is a subclass of 'E18 Physical Thing'. Which class can appear as the value of 'P50 has current keeper' for instances of 'E26 Physical Feature'?

A. E39 Actor
B. E2 Temporal Entity
C. E5 Event
D. E92 Spacetime Volume

Answer: E39 Actor