Reporter: A small Asian nation recently experienced a spate of heavy metal poisoning, leading to the death of three people and the hospitalization of over fifty others. Officials blame these poisonings on the presence of lead additives in everyday goods, such as petroleum paint, since the patients were found to have abnormally high levels of lead in their blood. But this is unlikely because the country in question banned the addition of lead to consumer goods ten years ago and has implemented a successful campaign to remove lead paint applied before the ban was enacted.
Which of the following, if true, would most weaken the reporter’s reasoning?
A) Consumer goods manufacturers in the country where the poisonings occurred have become reluctant to use lead in the manufacture of any goods.
B) Heavy metals have been shown to linger and become serious health hazards, if introduced into sources of drinking water, such as groundwater.
C) Use of lead in manufacturing in two countries that neighbor the country where the poisonings occurred has risen over the past five years.
D) No cases of heavy metal poisoning have been found in countries where lead is not generally used in the manufacture of goods that people have daily contact with.
E) People in the country where the poisonings occurred often consume fish caught in regions known to be polluted with lead oxides.