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

Which of the following definitions best describes 'Rachis brittleness'?

A. The initial vigour of the seedling.
B. The amount in adjusted weight basis (at commercial/standard moisture content) of grain that was harvested per unit area or plant.
C. The total number of tillers per area.
D. The tendency of rachis breaking from spike peduncle at maturity.

Answer: The tendency of rachis breaking from spike peduncle at maturity.