AMC 8 1990 Problem 2

Which digit of $.12345$ , when changed to $9$ , gives the largest number? $\text{(A)}\ 1 \text{(B)}\ 2 \text{(C)}\ 3 \text{(D)}\ 4 \text{(E)}\ 5$

Dataset text NuminaMath-1.5. Quoted with source.

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