Birds and Insects Both Have Wings,but We Do Not Consider

Multiple Choice

Birds and insects both have wings,but we do not consider this similarity as evidence of relatedness because

A) bird wings,but not insect wings,function on the physics principles of lift.
B) insect wings are vestigial.
C) the wings are not homologous structures with a common ancestral origin.
D) they did not evolve in the same region or live at the same time period.
E) there is no fossil link between these groups.