You are implementing a new frame relay network to provide connectivity between you offices. To do this, you set up the frame relay network using point-to-point subinterfaces.Which of the following does NOT need to be configured?（）

• A、The Frame Relay encapsulation on the physical interface.
• B、The local DLCI on each subinterface.
• C、An IP address on the physical interface.
• D、The subinterface type as point-to-point.