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

The property 'P14 carried out by' applies to instances of 'E7 Activity', and 'E85 Joining' is a subclass of 'E7 Activity'. Which class can appear as the value of 'P14 carried out by' for instances of 'E85 Joining'?

A. E2 Temporal Entity
B. E39 Actor
C. E93 Presence
D. E92 Spacetime Volume

Answer: E39 Actor