What is an advantage of using Ansible for automation as compared to puppet and chef?

What is an advantage of using Ansible for automation as compared to puppet and chef?
A . Ansible automates the enforcement of configuration settings.
B . Ansible perform automation without installing a software agent on the target node.
C . Ansible configures a set of CLI commands on a device by using NETCON
E . Ansible abstracts a scenario so that set of configuration setting can be used across multiple operating systems.

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Answer: B