Which of These Does NOT Occur During Meiosis I, the First

Which of these does NOT occur during meiosis I, the first division in meiosis?

A) The centromeres of sister chromatids are protected from splitting during anaphase.
B) Parts of non-sister chromatids are exchanged by crossing-over.
C) Sister chromatids of homologous chromosomes pair up and tetrads are formed.
D) Sister chromatids separate and move to the spindle poles.
E) Homologous pairs of chromosomes move to opposite spindle poles.