Question:
Which about WAR files are true?

Option A):
WAR files must contain the web application deployment descriptor.
Option B):
WAR files must be created by using archive tools designed specifically for that purpose.
Option C):
WAR files must be located in the web application library directory.
Option D):
The web container must serve the content of any META-INF directory located in a WAR file.

Correct Answer is Option A):
WAR files must contain the web application deployment descriptor.