Which sentence is the capitalized world used correctly?


AAn admirer of the work of Mary Cassatt DISCERNED a fake listed as one of her impressionistic paintings at the audition.
BColumbus DISCERNED American in 1492.

c.Sherlock Holmes's DISCERNMENT of hidden clues often dazzles his friend dr.watson a qualified doctor but an amateur sleuth.

DWe sometimes have trouble DISCERNING fact from fiction.