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

Which of the following definitions best describes 'Reflectance'?

A. The percent by weight of short fibers (12.7 mm or less) measured by Suter-Webb array method, or AFIS (Advance Fiber Information System), or the SFI from HVI (High Volume Instrument)
B. Using AFIS to measure the ratio of fibers with a 0.5 (or more) circularity divided by the amount of fibers with a 0.25 (or less) circularity.
C. The length at the 50% of fibers in an array are that long or longer
D. Colorimeter Rd, the percentage of the concept

Answer: Colorimeter Rd, the percentage of the concept