单项选择题

A．14 dollars.
B．7 dollars.
C．13 dollars.
D．6 dollars.
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Fortunately we can make vaccines for the H5N1 strain, and get them tested and manufactured in time for a pandemic.
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The outbreak of the strain of H5N1 flu in summer 2004, and by mid-April 2005, had killed ______ people.
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