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

Which of the following classes is one valid superclass of 'first-line supervisor of housekeeping or janitorial worker'?

A. actor, producer, or director
B. administrative services or facilities manager
C. first-line supervisor of building or grounds cleaning or maintenance worker
D. actuary (broad)

Answer: first-line supervisor of building or grounds cleaning or maintenance worker