Compound `Ph-O-overset(O)overset("||")C-Ph` can be prepared by the reaction of _______ .
A. phenol and benzoic acid in the presence of NaOH
B. phenol an benzoyl chloride in the presence of pyridine
C. phenol an benzoyl chloride in the presence of `ZnCl_(2)`
D. phenol and benzaldehyde in the presence of palladium