Imagine you built 4 models:

A: A model with 10 variables that has an AUC of 0.76 B: A model with 10 variables that has an AUC of 0.73 C: A model with 15 variables that has an AUC of 0.76 D: A model with 15 variables that has an AUC of 0.73

Which model is best, assuming all variables are equally easy to calculate and maintain.

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