Solve the problem.Doctors predict that by administering a vaccine, the number of new cases of a certain disease will decrease by half each year. If 900 people were afflicted with the disease in 2000, estimate the number of new cases in 2005. (Round to the nearest whole number, if necessary.)
A. 28 new cases in 2005
B. 113 new cases in 2005
C. 14 new cases in 2005
D. 56 new cases in 2005
Answer: A
Mathematics
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A. 
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