Scientist: There is a finite amount of helium, which is a key component of MRI magnets, in the world. Because the supply is not renewable, it is frivolous to waste this precious resource on such products as party balloons. Instead, we should use other gases, such as hydrogen, to fill balloons, and the price of helium should be raised significantly to make it prohibitive for such trivial purposes.
Which of the following, if true, provides the strongest support for the suggestion that the price of helium should be raised?
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AOther medical imaging tests exist that do not require helium to function.
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BHydrogen is at least as plentiful as helium, and is not a finite resource.
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CThe cost of the helium used for medical purposes is already significantly higher than helium sold on the open market.
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DA survey of patients has shown that they do not mind paying slightly more for services if doing so helps the environment.
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E80% of people who purchase gases for party balloons cite the price of helium as one of their top three considerations in choosing it.
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正确答案: E