You develop a Windows Communication Foundation (WCF) service. It is used exclusively as an intranet application and is currently unsecured. You need to ensure that the service meets the following requirements: The service now must be exposed as an Internet application. The service must be secured at the transport level. Impersonation and delegation cannot be enabled. What should you use? （）
- A basicHttpBinding and HTTP
- B basicHttpBinding and Kerberos
- C wsHttpBinding and Kerberos
- D wsHttpBinding and HTTPS