We can assume that the job Timothy is working on is in the older building. Thus, the correct option is A.
An ungrounded receptacle may be defined as the ground wire required to deliver the same level of protection from house fires and electrical shocks suggested by grounded doorways.
The ungrounded receptacles are only furnished in the building that is already built up to a certain level with appropriate dimensions. It connects all the electrical appliances of the home through a cage of metallic or copper wire.
Therefore, the correct option is A.
To learn more about Ungrounded receptacles, refer to the link:
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