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

Which of the following definitions best describes 'Flag smut plant response'?

A. Septoria tritici blotch response in the plants caused by the agent Mycosphaerella graminicola (Septoria tritici). symptoms: the lesions are linear and restricted laterally.
B. Flag smut disease response in the plants caused by the agent Urocystic agropyri causing flag smut disease.
C. Stripe rust (yellow rust) severity in the plants caused by the agent Puccinia striiformis f.sp. tritici.
D. Fusarium head blight (scab) incidence/severity/response in the plants caused by the agent fusarium spp.

Answer: Flag smut disease response in the plants caused by the agent Urocystic agropyri causing flag smut disease.