Mitosis is a way for the replication of a cell's chromosomes and segregates them. It produces two identical nuclei. The stage of mitosis where the sister chromatids pulled apart from one another is anaphase. It is where the sister chromoatids move away from the metaphse plate to opposite ends of the cells. The specific stage is anaphase II. It frees the sister chromatids from each other.
Metaphase is the stage where the chromosomes are spread out in the nucleus. Telophase is the final stage of mitosis where the separation of the duplicated genetic material happens. Cytokinesis is where the division of the cytoplasm of the cell into two daughter cells happens.
Answer - Anaphase