Task: Class Definition Understanding (ontology: Arts_Media_Entertainment/Propp)

Which of the following definitions best describes 'Brother'?

A. A subclass of sibling that designates all sisters; each member has gender female and at least one sibling.
B. A subclass of brother that designates all stepbrothers; each member has gender male and at least one stepsibling.
C. A subclass of brother that designates all biological brothers; each member has gender male and at least one biological sibling.
D. A subclass of sibling that designates all brothers; each member has gender male and at least one sibling.

Answer: A subclass of sibling that designates all brothers; each member has gender male and at least one sibling.