The Nuclear Genome of a Mouse Nerve Cell Is Compared

The nuclear genome of a mouse nerve cell is compared to that of a mouse skin cell.What differences can we expect to see between these two cells' nuclear genomes?

A) The two cells have almost identical genomes,but the nerve cell has more nerve-specific genes.
B) The two cells have almost identical genomes,but the skin cell has more skin-specific genes.
C) The two cells have different genomes: the nerve cell has nerve-specific genes but not skin-specific genes,and the skin cell has skin-specific genes but no nerve-specific genes.
D) The two cells have similar genomes,but the nerve cell has more nerve-specific genes and the skin cell has more skin-specific genes.
E) The two cells have the same genome;there will be no differences.