What Evidence Supports the Observation That Sister Centromeres Behave as a Unit

What evidence supports the observation that sister centromeres behave as a unit during meiosis I?

A) Data from electron microscopy studies suggests that the centromere/kinetochore complex of sister chromatids is compacted.The kinetochores then capture microtubules in a way that allows the kinetochores of sister chromatids to function as a single unit.
B) Data from electron microscopy studies suggests that the centromere/kinetochore complex of homologous chromosomes is diffuse.The kinetochores then release microtubules in a way that allows the kinetochores of homologous chromosomes to function as a single unit.
C) Data from electron microscopy studies suggests that the chromosomes are compacted.The chromosomes then capture microtubules in a way that allows the them to function as a single unit.