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PCA
PromQL
hard
Question 1 of 56

An operator sees the annotation input to histogram_quantile needed to be fixed for monotonicity after aggregating classic histogram buckets. What does that indicate?

AThe histogram was missing a +Inf bucket entirely
BBucket counts were not monotonically increasing, so Prometheus adjusted them to continue the calculation
CThe le label was absent from all bucket series
Dhistogram_quantile cannot be used with rate()

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