Refer to the exhibit You try to connect to a network element using a Cisco onePK
application. You get this error while running the application.Which option describes the
issue?

A.
There is no reachability to the network element. ICMP and TCP connectivity must be
checked along the path.

B.
There is a TLS certificate issue while connecting to the router.

C.
A firewall rule is blocking the onePK TCP connection to the router.

D.
A “session max” is configured on the router, and the number of sessions to the router
has been exceeded.

E.
There is an error in the onePK application code, and an incorrect argument was passed
in one of the APIs.