You work as a Software Developer for ABC Inc.

You work as a Software Developer for ABC Inc. The company uses Visual Studio.NET as its application development platform. You create an application using .NET Framework. You need to establish a Secure Sockets Layer (SSL) session with a remote server. The security policy of the company requires that both the client and server to provide a valid certificate for authentication before communications begins. Which of the following properties of the SslStream class will you use to accomplish this task?