You are designing a Windows Azure application. The application includes processes that communicate by using Windows Communications Foundation （WCF） services. The WCF services must support streaming. You need to recommend a host for the processes and a WCF binding. Which two actions should you recommend？（）
- A Host the processes in web roles.
- B Host the processes in worker roles.
- C Use NetTcpBinding for the WCF services.
- D Use WSHttpBinding for the WCF services.