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

Which of the following definitions best describes '4-hydroxybenzoate 3-monooxygenase activity'?

A. Catalysis of the reaction: 4-hydroxybenzoate + NADPH + H+ + O2 = protocatechuate + NADP+ + H2O.
B. Catalysis of the reaction: 1,8-cineole + NADPH + H+ + O2 = 2-exo-hydroxy-1,8-cineole + NADP + H2O.
C. Catalysis of the reaction: 24-methylenelophenol + O2 + NADH + H+ = 4alpha-hydroxymethyl-ergosta-7,24(241)-dien-3beta-ol + NAD + H2O.
D. Catalysis of the reaction: biphenyl-2-ol + H+ + NADH + O2 = biphenyl-2,3-diol + H2O + NAD+. Also converts 2,2'-dihydroxybiphenyl into 2,2',3-trihydroxy-biphenyl.

Answer: Catalysis of the reaction: 4-hydroxybenzoate + NADPH + H+ + O2 = protocatechuate + NADP+ + H2O.