Refer to the exhibit.

<?xml version="1.0" encoding="utf-8"?> <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"/>

What does the error message relay to the administrator who is trying to configure a Cisco IOS device?

A.	The device received a valid NETCONF request and serviced it without error.
B.	The NETCONF running datastore is currently locked.
C.	A NETCONF request was made for a data model that does not exist.
D.	A NETCONF message with valid content based on the YANG data models was made, but the request failed.