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Which of the following describes concept drift?

Which of the following describes concept drift?
A . Concept drift is when there is a change in the distribution of an input variable
B . Concept drift is when there is a change in the distribution of a target variable
C . Concept drift is when there is a change in the relationship between input variables and target variables
D . Concept drift is when there is a change in the distribution of the predicted target given by the model
E . None of these describe Concept drift

Answer: D

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