
Passage: Nero was the Roman emperor in the first century AD. Every Roman emperor drank wine and drank only from tin pots and tin goblets. Whoever uses tin utensils to drink alcohol, even once, can lead to poisoning. And poisoning always leads to insanity.
Question: If all the above statements are true, which of the following statements must be true?
A. A.Those who are deranged have used tin utensils to drink wine at least once
B. B.Whatever else happened to him, Emperor Nero must have been deranged
C. C.The use of tin utensils is the prerogative of Roman emperors
D. D.Poisoning was a common phenomenon among the subjects of the Roman dynasty
Answer: