Task: Class Relation Understanding (ontology: Business_Finance/Occupation_Ontology)

Which of the following classes is one valid superclass of 'explosives worker, ordnance handling expert, or blaster'?

A. explosives worker, ordnance handling expert, or blaster (broad)
B. EL++ ontology module
C. actor, producer, or director
D. accountant or auditor (broad)

Answer: explosives worker, ordnance handling expert, or blaster (broad)