The correct answer is B. HPV 7.
The photo depicts verruca vulgaris. HPV 2 and 7 are most likely to cause Butcher’s warts. HPV 3 and 10 are most likely to cause flat warts. HPV 13 and 32 are most likely to cause oral focal epithelial hyperplasia (Heck’s disease).
James WD, Berger TG, Elston DM, Neuhaus IM. Andrews’ Diseases of the Skin: Clinical Dermatology, 12th ed. Philadelphia, PA: Elsevier; 2016.