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

Which of the following definitions best describes 'Calyx colour - Estimation'?

A. Observe leaf colour and rate it.
B. Observe calix colour and rate it.
C. Usually recorded at 50% flowering.
D. Observe the host reaction to BLS, and rate it from immune/resistant to susceptible.

Answer: Observe calix colour and rate it.