For the default indicator “Number of open and overdue incidents,” the breakdown that should be excluded from the historical data collection job is: B. Age The 'Age' breakdown is a time-dependent measure that indicates how long an incident has been open. It changes as time progresses, which makes it irrelevant and potentially misleading for historical data collection, as historical snapshots would not accurately reflect the 'Age' at the time the data was originally captured. Collecting historical data on the 'Age' breakdown could lead to incorrect interpretations when analyzing past data.