The Wings of Bats and Birds Are ____

The wings of bats and birds are ____.

A) homologous because their common ancestor had wings
B) not homologous because their similar internal bone structure evolved independently as an adaptation for flight ​
C) homologous because they are adapted for the same function
D) homologous because they have similar internal bone structure inherited from a common ancestor
E) not homologous because wings evolved from different ancestral organs in birds and bats