Which explanation is correct?

After loading data to Einstein Discovery and creating a story, the client asks the Einstein Consultant to explain the "Unexplained Bar" in the "Why it Happened" chart.

Which explanation is correct?
A . It should always be 0 or the model should not be used.
B . It shows the difference between the predicted outcome and the observed outcome.
C . It displays the difference between the analyzed data and the data not reviewed.
D . It only appears for outcomes that do not have an explanation.

Answer: B