I'm using Decision Tree to predict the majors of new university students (classify them). The data of existing students has 3 majors (classes): Science, Business, and Arts. The variables used for prediction are: Origin_City, HighSchool_MathGrade, HighSchool SocialScienceGrade, and HighSchool GPA. What's the length of the longest possible path from the root node to a leaf node? O 1 O 2 O 3 O 4 It depends on the number of unique Origin_City values.

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