What is a full trust plug-in?
A.
a plug-in that is registered outside the sandbox
B.
a plug-in that is registered for use with Microsoft Dynamics CRM Online only
C.
a plug-in that is registered with a third-party code-signing authority
D.
a plug-in that is registered inside the sandbox
This seems to contradict the answer on questions 17:
You are developing a plug-in that will be used in both Microsoft Dynamics CRM online and
onpremises environments. Which trust level is required?
Where the answer is partial.
From MSDN: “Developers have the option of registering their plug-ins in the sandbox, known as partial trust, or outside the sandbox, known as full trust.”