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

Which of the following classes is one valid superclass of 'pourer or caster, metal'?

A. EL++ ontology module
B. metal furnace operator, tender, pourer, or caster
C. actuary (broad)
D. accountant or auditor (broad)

Answer: metal furnace operator, tender, pourer, or caster