Which characteristic distinguishes Ansible from Chef?

A.	Ansible uses Ruby to manage configurations. Chef uses YAML to manage configurations.
B.	The Ansible server can run on Linux, Unix or Windows. The Chef server must run on Linux or Unix.
C.	Ansible pushes the configuration to the client. Chef client pulls the configuration from the server.
D.	Ansible lacks redundancy support for the master(primary) server. Chef runs two masters in an active/active mode.