A 17-year-old man attends the local sexual health clinic. He has developed a large, keratinised genital wart on the shaft of his penis. This has been present for around three months but he has been too embarrassed to present before now. What is the most appropriate initial management?
A. Topical podophyllum
B. Cryotherapy
C. Topical salicylic acid
D. Electrocautery