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

Which of the following definitions best describes 'Resistance to Phytophthora cactorum RR% method'?

A. Observe and rate the resistance of the plant to verticillium wilt caused by Verticillium dahliae.
B. Observe and rate the resistance of the plant to crown rot caused by Phytophthora cactorum.
C. Taste the fruit and rate the average flavor of fruit as a perception of sweetness and presence of off-flavors on 3-5 fruit per genotype.
D. Observe and rate the resistance of the plant to root rot caused by Phytophthora cactorum.

Answer: Observe and rate the resistance of the plant to root rot caused by Phytophthora cactorum.