When Looking Through a Microscope at an Entire Set of Human

When looking through a microscope at an entire set of human male chromosomes, how would you be able to differentiate an autosome pair from a sex chromosome pair?

A) The sex chromosome pair would be about 10 times larger than the autosome pair.
B) The circular-shaped cells would be the autosomes and the square shapes would be the sex chromosomes.
C) There would be three cells in the autosome "pair" and two cells in the sex chromosome "pair."
D) The shape of the sex chromosomes would differ, whereas each autosome pair would look identical.