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

Which of the following definitions best describes 'BBCH 83 evaluation'?

A. Assessment of the date when 50% of the crown fruits are mature (has changed color or is dried and dehiscent or has fallen)
B. Assessment of the date when leaves are coming out of their bud. For broadleaves: the first leaves are spread on about 40% of the crown. For pines: 40% of very elongated buds with first needles coming out or out of the sheath but still tight, as stuck between them. For other conifers: 40% of buds with open-brushed needles.
C. Assessment of the date when shoots reached 40% of their final size (deducted a posteriori)
D. Assessment of the date when 30% of the crown fruits are mature (has changed color or is dried and dehiscent or has fallen)

Answer: Assessment of the date when 30% of the crown fruits are mature (has changed color or is dried and dehiscent or has fallen)