In which situation is private IPv4 addressing appropriate for a new subnet on the network of an organization?

In which situation is private IPv4 addressing appropriate for a new subnet on the network of an organization?

A. The network has multiple endpoint listeners, and it is desired to limit the number of broadcasts. B. The ISP requires the new subnet to be advertised to the Internet for web services. C. There is limited unique address space, and traffic on the new subnet will stay local within the organization. D. Traffic on the subnet must traverse a site-to-site VPN to an outside organization.