Task: Inferred Class Relation Reasoning (ontology: Food_Agriculture/FoodOn)

After reasoning, which of the following classes is one valid superclass of 'cowpea leaf (raw)'?

A. Sub-Saharan African
B. ryecorn (food product)
C. 50202300 - non alcoholic beverages - ready to drink (gs1 gpc)
D. organism material

Answer: organism material