Ensure that SSDL can be modified without rebuilding application.

A.
res://*/Model.csdl | … (rest of files) copy to output directory

B.
.(backslash)Model.csdl | … (rest of files) embeded in output assembly

C.
res://*/Model.csdl | … (rest of files) embeded in output assembly

D.
.(backslash)Model.csdl | … (rest of files) copy to output directory

Explanation: