If Gene Replacement Therapy Became Available

If gene replacement therapy became available

A) it would not work for humans because we have too many chromosomes.
B) it would involve a surgical technique that separates chromosomes that have failed to segregate properly during meiosis II.
C) it could be used to treat victims of a recessive disease by removing the dominant damaging autosomal allele and replacing it with a harmless one.
D) it would replace defective alleles with normal ones.
E) it would remove entire chromosomes from cells and repair the defective genes.