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

The property 'P50i is current keeper of' applies to instances of 'E39 Actor', and 'E74 Group' is a subclass of 'E39 Actor'. Which class can appear as the value of 'P50i is current keeper of' for instances of 'E74 Group'?

A. E10 Transfer of Custody
B. E18 Physical Thing
C. E6 Destruction
D. E64 End of Existence

Answer: E18 Physical Thing