All of the Following Accurately Describe Knockout Mice EXCEPT

All of the following accurately describe knockout mice EXCEPT

A) knockout mice have been used to study the genetics of human deafness.
B) knockout mice serve as models of various human disorders.
C) knockout mice have been valuable tools in learning about the functions of genes.
D) their development required the ability to isolate mouse embryonic stem cells.
E) all of the mouse genes have been knocked out in various mouse strains.