Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Pericarp thickness class'?

A. Percentage of plants that are fully branched at stages r5-r9
B. Observe head shape and rate it.
C. Observe pericarp thickness and rate it.
D. Susceptibility to grasshopper, all sp. (1=resistant, 9=susceptible)

Answer: Observe pericarp thickness and rate it.