1. About the bias-variance decomposition, which one of the following formulas is correct? A) MSE = variance + bias B) MSE = covariance + squared bias C) MSE = variance + squared bias D) MSE = covariance + bias 2. Which one of the following methods is an ensemble learning method?( ) A) Support Vector Machine (SVM) B) Decision tree algorithm C) Bagging D) Linear Discriminant Analysis (LDA)