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

After reasoning, which of the following classes is one valid superclass of 'inflorescence bract primordium'?

A. axial secondary xylem parenchyma
B. carpel primordium visible stage
C. phyllome primordium
D. lower glume of tassel spikelet

Answer: phyllome primordium