Fossil X is older than fossil Y. Most evident answer is

Options

A. Fossil Y has got some of the vestigial organs which are functional in X
B. Fossil Y has got homologous and analogous organs of fossil X
C. Fossil X is found in deeper sedimentation than Y
D. Fossil Y was found in better state than that of X

Answer

A

Explanation

Since fossil Y has vestigeal organ that contain non functional organ which is functional in its ancestor i.e. X . Thus X is much older thanY .