You are answering a USMLE-style medical question. Question: A healthy 19-year-old man presents to his primary care provider complaining of painless “blisters” in his mouth. He reports that he noticed a white film on his tongue and the sides of his mouth 2 days ago while brushing his teeth. The film was easily brushed off. He also complains of a bitter metallic taste in his mouth but otherwise denies pain, burning, dysphagia, or hoarseness. He is otherwise healthy and takes no medications. He is a competitive swimmer and has had 8 sexual partners in the past year. He intermittently uses barrier protection. On exam, he is well-appearing and in no acute distress. His oral examination demonstrates patches of white pseudomembranes that can be wiped away to reveal erythematous mucosa. A medication with which of the following mechanisms of action is most appropriate in this patient? Options: A) Disruption of cell membrane permeability B) Disruption of microtubule formation C) Inhibition of 14-alpha-demethylase D) Inhibition of beta-glucan synthase Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.