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

After reasoning, which of the following classes is one valid superclass of 'calcium oxide'?

A. 30260 - xylitol (efsa foodex2)
B. Haliotis australis
C. coconut milk (unpasteurized)
D. alkaline earth molecular entity

Answer: alkaline earth molecular entity