Which statement is TRUE?

A. G Shmueli (2010), in her article, "To Explain or to Predict", identifies two classes of methods used for prediction but not for explanatory modeling; they are: (1) shrinkage methods and (2) ensemble methods such as bagging, random forecasts and boosting.

B. G Shmueli (2010), in her article, "To Explain or to Predict", argues that if performance is significantly better on the validation set compared to the training set, the danger of overfitting is implied.

C. Data partitioning is used primarily for distinguishing predictive analytics from traditional explanatory modeling so that the political boundaries of two professional groups do not overlap.

D. The programming languages Python and R cannot be used for data mining, the only tool available for data mining is Analytic Solver Data Mining ( formerly XL Miner).