The image shows two classes of observations - one represented in blue and the other represented in red. The green line represents the classification model trying to separate the two classes of observations. 3 different models were run on the same data-set.

• Model 1 in the image represents an SVM .
• Model 2 - a decision tree .
• Model 3 - a simple linear classifier.

Out of the three models, which of the one has the least error on the given training data-set ?