A digital publishing firm reorganises its editorial department. Under which of the following circumstances will the firm definitely experience an increase in labour productivity (measured as articles published per staff hour)?
The total number of articles published falls at a faster rate than the fall in total staff hours worked
The total number of articles published rises at a slower rate than the rise in total staff hours worked
The total number of articles published falls at a slower rate than the fall in total staff hours worked
The total number of articles published decreases proportionally to the decrease in total staff hours worked
