In What Way Do Kinetochore Microtubules Facilitate the Process of Splitting

In what way do kinetochore microtubules facilitate the process of splitting the centromeres?

A) They use motor proteins to hydrolyze the centromere at specific arginine residues.
B) They create tension by pulling toward opposite poles.
C) They slide past each other like actin microfilaments.
D) They phosphorylate the centromere, thereby changing its conformation.