This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
Drug of choice in scabies is: 
Select and explain. 
A. Malathion, B. Ivermectin, C. Metronidazole, D. Benzoyl peroxide
B: Ivermectin
Answer: B: Ivermectin 
Explanation: Ans: b (Ivermectin) Ref: KDT, 6th ed, p. 814Ivermectin is the only drug effective orally in scabies and pediculosis.Single 0.2 mg/kg dose cures most patients.Drugs used in scabies are permethrin, ivermectin, lindane, benzyl benzoate, crotamiton and sulphur.Malathion can be used in the treatment of pediculosis.Benzoyl peroxide is an anti acne agent.