Which of the Following Is NOT an Example of the Importance

Which of the following is NOT an example of the importance of gene duplication in genome evolution?

A) The human olfactory multigene family consists of about 1000 genes used in our sense of smell.
B) Ribosomal protein S4 is found as a single-copy gene in all three domains of life.
C) After a segmental duplication, the original copy of the gene can continue its function while the new copy undergoes mutation, leading to new functions.
D) The globin gene family in humans consists of 13 genes that encode globin-like molecules, most of which produce proteins that carry oxygen.
E) These are all examples of how gene duplication plays a role in genome evolution.