Solve the problem.There were 883 billionaires in a certain country this year and 81 billionaires in this same country two years ago. Find the unit ratio of the number of billionaires this year to the number from two years ago. What does your result mean in this situation?
A. 
; The number of billionaires this year was 11.6 times greater than two years ago.
B. 
; The number of billionaires this year was 0.1 times greater than two years ago.
C. 
; The number of billionaires this year was 10.9 times greater than two years ago.
D. 
; The number of billionaires this year was 10.5 times greater than two years ago.
Answer: C
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= 
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A. y = - 
x - 
B. y = - 
x - 
C. y = - 
x - 
D. y = 
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