You want to create a valid directory structure for your Java EE web application， and you want to put yourweb application into a WAR file called MyApp.war. Which two are true about the WAR file？（）

• A、At deploy time， Java EE containers add a directory called META-INF directly into the MyApp directory.
• B、At deploy time， Java EE containers add a file called MANIFEST.MF directly into the MyApp directory.
• C、It can instruct your Java EE container to verify， at deploy time， whether you have properly configured your application’s classes.
• D、At deploy time， Java EE containers add a directory call META-WAR directly into the MyApp directory.