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

After reasoning, which of the following classes is one valid superclass of 'Grain plumpness fraction 2.2 mm'?

A. Flw Cp day
B. Barley trait
C. YwRustCI Cp pct
D. Auricle pigmentation - Estimation

Answer: Barley trait