Which of the following configuration snippets enables Active Directory authentication?

Which of the following configuration snippets enables Active Directory authentication?
A . ldap.authentication.active-directory.enabled=true
ldap.authentication.active-directory.domain=your domain
B . ldap.authentication.enabled=true
ldap.authentication.active-directory.domain=your domain
C . ldap.authentication=true
ldap.authentication.active-directory.domain=your domain
D . ldap.authentication.active-directory=true
ldap.authentication.active-directory.domain=your domain

Answer: A

Explanation:

Reference: https://docs.alfresco.com/process-services1.9/topics/authentication.html