Count Dracula, the most famous vampire, rumored to have killed at least 200,000 people, was based on a real person who lived in eastern Europe about 600 years ago. He was indeed a "monster," although he was not a real vampire. The historical Count Dracula may have suffered from which of the following?
(a) Porphyria,
(b) EB,
(c) Halitosis,
(d) Vitiligo. Explain your answer.