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You are implementing a retraining policy for a customer churn prediction model on Vertex AI. New training data becomes available weekly. Your goal is to minimize both cost and effort in the retraining process. What is your recommended approach?
A
Retrain the model when a significant shift in the distribution of customer attributes is detected in the production data compared to the training data.
B
Retrain the model when the model's latency increases by 10% due to increased traffic.
C
Retrain the model when the model accuracy drops by 10% on the new training dataset.
D
Retrain the model every week when new training data is available.
