Some features mentioned below are important for the segregation of homologous chromosomes in meiosis I.

A. Synaptonemal complex formation between homologous chromosomes.

B. Degradation of cohesins at the chromosome arms.

C. Retention of cohesins at the centromeres.

D. Bi-orientation of kinetochores of sister chromatids.

Which one of the following options has all correct features?