Tourism spokesperson: Rumors that our nation suffers from high rates of tuberculosis are unfounded. First of all, our nation spends substantially more money per-capita on the prevention of tuberculosis than do any surrounding nations. Second, tourists who visit our nation usually spend all of their time along our coasts and hills, the areas of the country where there are almost no cases of tuberculosis.
Which of the following, if true, most seriously undermines the spokesperson's claim that the nation does not have high rates of tuberculosis?
A. A tourist could choose to visit the nation's swamps, where tuberculosis is more common.
B. A nation with high rates or tuberculosis has a strong incentive to spend large amounts of money on preventing the spread of the disease.
C. A large percentage of the money that the nation devotes to tuberculosis prevention comes originally from the tourist trade.
D. One of the nations that shares a border with the nation in question has very high rates of tuberculosis.
E. The nation devotes most of its tuberculosis prevention budget to the areas outside of the coasts and hills where tourists are unlikely to visit.