![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Refer to the exhibit. What statement is true about the interface S1/0 on router R1?()
A.
Labeled packets can be sent over an interface.
B.
MPLS Layer 2 negotiations have occurred.
C.
IP label switching has been disabled on this interface.
D.
None of the MPLS protocols have been configured on the interface.