Task: Class Relation Understanding (ontology: Food_Agriculture/PlantOntology)

Which of the following classes is one valid superclass of 'leaf abaxial trichome'?

A. IE.03 3/4 of inflorescence emerged from flag leaf sheath stage
B. BO.03 late boot stage
C. leaf trichome
D. B enlarged microsporocyte stage

Answer: leaf trichome