Project Euler #243: Resilience

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    Accordinng to the problem description if we calculate the resilience of d = 9, we see that R(9) = 2/8 < 4/10. If so then, d = 9 should be the smallest denominator for which R(d) < 4/10 But in the example given in problem description d = 12 is considered as smallest denominator having a resilience R(d) < 4/10. Am I interpreting the problem wrongly ?