Which command would you use to perform comprehensive diagnostics on the entire fabric?

A.
ibdiagpath -v -1

B.
ibportstate

C.
ibtracert slid dlid

D.
ibdiagnet -v -r

Explanation:
http://docs.oracle.com/cd/E18476_01/doc.220/e18478.pdf (page 14-7 topic: 14.1.11)