You work as an application developer at Certkiller .com. You are required to dynamically load assemblies into an application domain. You are using the Load method of the AppDomain class. What types of files can you this use method for？（）

• A、 Library application files （.dll）.
• B、 All assembly files， no matter what there file extensions are.
• C、 Application configuration files （.config）.
• D、 Standalone application files （.exe）.