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

Which of the following classes does '"Why frog has rough skin."' belong to? Context: "Terminal motif A2311.8"

A. "Origin of narcotic plants."
B. "Animal characteristics reward for hospitality."
C. "Origin of animal's skin."
D. "Origin of frogs."

Answer: "Origin of animal's skin."