Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'flutriafol'?

A. A racemate comprising equimolar amounts of (R)- and (S)-the concept. A broad-spectrum insecticide that provides excellent control of a wide variety of insects pests across crops including whiteflies, flea beetles, armyworms, caterpillars, moths, thrips, fruit worms, and squash bugs. It targets ryanodine receptors of calcium channels in insect cells leading to rapid cessation of feeding and long-lasting control. It is also capable of controlling insect pests that are organophosphate, pyrethroid, and carbamate resistant.
B. A racemate comprising an equimolar mixture of (R)- and (S)-the concept. A systemic fungicide, it is used to control fungal diseases in cereal crops.
C. A carboxamidine resulting from the formal condensation of the amino group of 4-chloro-2-(trifluoromethyl)aniline with the oxygen of the acetyl group of N-(propoxyacetyl)imidazole. A sterol demethylation inhibitor, it is used as a fungicide for the control of powdery mildew, scab and other diseases on a variety of crops.
D. A member of the class of ureas that is 1H-imidazole-1-carboxamide substituted by a propyl and a 2-(2,4,6-trichlorophenoxy)ethyl group at the amino nitrogen atom. A fungicide active against a wide range of diseases affecting field crops, fruit, turf and vegetables.

Answer: A racemate comprising an equimolar mixture of (R)- and (S)-the concept. A systemic fungicide, it is used to control fungal diseases in cereal crops.