The fraction 9921=0.bn−1bn−2…b2b1b0, where n is the length of the period of the repeating decimal expansion. What is the sum b0+b1+⋯+bn−1?
(A) 874(B) 883(C) 887(D) 891(E) 892
Dataset text AMC 12 2000 to 2025. Quoted with source.
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