Deserts are inhabited with several distinct animal species,with each their own method of adapting to long periods of moisture shortage.

A. with several distinct animal species,with each their
B. with distinctly several animal species,each with its
C. by several distinct animal species,each with its
D. by several distinct animal species,having each its
E. by several distinct animal species,that each has their

in C: "each with its" => why this is correct with any conjunction. Any explanation.

This is not the case of "each of who" OR ""each of whom"