Krinkles potato chips is having a "Lucky Seven Sweepstakes." The one grand prize is $70,000; 7 second prizes each pay $7,000; 77 third prizes each pay $700; and 777 fourth prizes each pay $70. What is the expectation of this contest, if there are 9 million entries?
?

A. $0.05
B. $0.86
C. $0.03
D. $0.25
E. $0.01

Answer: C

Mathematics

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