Skin 8 year old boy presented with boggy swelling on the scalp and easily pluckable hair. which of the following is the investigation of choice? A Biopsy B X ray skull C KOH smear D Tzank smear 💡 Explanation 8 year old boy presented with boggy swelling on the scalp and easily pluckable hair. which of the following is the investigation of choice? ✓ Correct Answer: C. KOH smear