A. Create an asmx file and add a @ServiceHost directive to this file. Copy the file to the root of the application directory.
B. Create an .asmx file and add a @Register directive to this file. Copy the file to the bin directoyy of the application.
C. Create a svc file and add a @ServiceHost directive to this file. Copy the file to the root of the application directory.
D. Create a .svc file and add a @Register directive to this file. Copy the file to the bin directory of the application.