Task: Class Definition Understanding (ontology: Business_Finance/Financial_Industry_Business_Ontology)

Which of the following definitions best describes 'post office box'?

A. the concept associated with an address
B. classifier for a street or other delivery location, such as a dwelling located along a waterway
C. system for allocating addresses to objects
D. address component that identifies an individual unit within a larger structure, such as an apartment, office, hangar, slip, mailbox, and so forth, at a given street address

Answer: the concept associated with an address