You need to design a domain model that meets the company business and security requirements for controlling access to the new Web-based ordering application. What should you do？（）

• A、Create a child OU within the existing domain
• B、Create a child domain of the existing domain
• C、Create a new domain in a new forest. Configure the new domain to trust the existing domain
• D、Create a new tree in the existing forest. Configure the new domain to trust the existing domain