A network engineer is installing a switch for temporary workers to connect to. The engineer does not want this switch participating in Spanning Tree with the rest of the network; however, end user connectivity is still required. Which spanning-tree feature accomplishes this?

A.	BPDUblock
B.	BPDUfilter
C.	BPDUignore
D.	BPDUguard
E.	BPDUdisable