Dental A young boy presented with lesion over his right buttock which had peripheral scaling and central scarring. The investigation of choice would be – A Tzank Smear B KOH preparation C Biopsy D Saboraud'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