Skin A young boy presented with lesion over his right buttock which had peripheral scaling and central scarring. The investigation of choice would be A Tzanck Smear B KOH preparation C Biopsy D Sabouraud's agar 💡 Explanation A young boy presented with lesion over his right buttock which had peripheral scaling and central scarring. The investigation of choice would be ✓ Correct Answer: C. Biopsy