what is needed to keep the same behavior as in WLS 10.3.6?

A WebLogic server (WLS) domain was recently updated from WLS 10.3.6 to WLS 12.12.
What is the mode of operation of the Node Manager after the update and what is needed to
keep the same behavior as in WLS 10.3.6?

A.
Node Manager runs in “per machine” mode and nothing is needed to keep the same
behavior.

B.
Node managerruns in “per domain” mode and requires manual steps to return to the “per
machine” mode, used in WLS10.3.6.

C.
Node Manager mode of operating and behavior can be selected in reconfiguration
Wizard.

D.
Nothing, Node Manager runs and behaves the same on both WLS versions

Explanation: