Refer to the exhibit, S$2$ is the root bridge. Assume that S$3$ has a higher priority than S$1.$

Using the following RSTP port role label abreviations $($RP$,$ DP$,$ EP or AP$),$ choose the correst port role label. What is the label for Switch $1$ interface G$1/1?$

Select one.

a DP

b$$RP

c$$AP

d$$EP