Why are metaphase chromosomes always used in the preparation of karyotypes A)

This is the stage when the chromosomes are easier to see because they are fully condensed.

B)

This is the stage when the chromosomes are easier to see because they are elongated and uncondensed.

C)

The X and Y chromosomes are only present during metaphase.

D)

This is the only cell cycle phase when the chromosomes are unduplicated.

E)

This is when the chromosomes are being duplicated.