Which Event Is Least Likely to Occur After a Gene

Multiple Choice

Which event is least likely to occur after a gene duplication event?

A) One gene retains its function,while the other becomes a pseudogene.
B) Both genes retain their function,but they are expressed in different tissues.
C) Both genes retain their function,but they are expressed at different times.
D) Both genes become pseudogenes.
E) One gene retains its function,while the other evolves to have a new function.