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

Which of the following classes is one valid superclass of 'aerial tuber axillary vegetative bud'?

A. 2.04 main shoot and axillary shoots visible at four nodes stage
B. 2.01 main shoot and axillary shoots visible at one node stage
C. 2.03 main shoot and axillary shoots visible at three nodes stage
D. shoot axis tuber axillary vegetative bud

Answer: shoot axis tuber axillary vegetative bud