The correct option is C Separation of chromatids and centromere
Meiosis first is followed by second meiotic division, which is essentially a equational mitotic division. At the end of meiosis I, the chromosome number becomes halved in daughter cells as the homologous chromosomes separate from each other.
In anaphase-II of meiosis-II, the centromere divides. The sister chromatids of each chromosome separate and move towards opposite poles. Thus, option c is correct.