How many of the following statements are correct related to metaphase?
a) Spindle fibers attach to kinetochores of chromosomes
b) The Chromosome moves to the spindle equator and gets aligned along the metaphase plate
c) At this stage, chromosome morphology is most easily studied.
d) A metaphase chromosome is made up of two sister chromatids which are held together by a centromere
e)  The complete disintegration of the nuclear envelope marks the start of metaphase