Point out the correct statement.

Point out the correct statement.
(a) The difference between the class centroids and the overall centroid is used to measure the variable influence
(b) The Bagged Trees output contains variable usage statistics
(c) Boosted Trees uses different approach as a single tree
(d) None of the mentioned

Answer:
(a) The difference between the class centroids and the overall centroid is used to measure the variable influence