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

Which of the following definitions best describes '1-hydroxy-2,1-benzoxaborole'?

A. A member of the class of benzoxaboroles that is 2,1-benzoxaborole in which the hydrogen attached to the boron atom is replaced by a hydroxy group.
B. A monocarboxylic acid that is cyclopropanecarboxylic acid substituted by methyl groups at positions 1 and 2 and a 3,5-dichlorophenylcarbamoyl group at position 2.
C. A member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults.
D. A member of the class of benzoxaboroles that is 1,3-dihydro-1-hydroxy-2,1-benzoxaborole substituted at position 5 by a fluoro group. A topical antifungal agent used for the treatment of onychomycosis (fungal infection of the toenails and fingernails).

Answer: A member of the class of benzoxaboroles that is 2,1-benzoxaborole in which the hydrogen attached to the boron atom is replaced by a hydroxy group.