The following drug is effective in treatment of ptyriasis versicolor –: (A) Ketoconazole, (B) Metronidazole, (C) Griseofulvin, (D) Chloroquine
Answer is A. Treatment of P. versicolor

Systemic → Ketoconazole, Fluconazole, Itraconazole.
Topical → Azoles (clotrimazole, econazole, micronazole, ketoconazole), selenium sulfide, sodium thiosulphate, whitfield's ointment (3% salicylic acid + 6% benzoic acid).