Question: What is the primary purpose of the Nudsf_UnstructuredDataManagement_Unsubscribe service operation?
Option 1: To subscribe to notifications of data change in the UDSF.
Option 2: To update the subscription ID for unstructured data management.
Option 3: To un-subscribe from notifications of data change in the UDSF.
Option 4: To retrieve the result of a previous subscription request.
Explanation: The Nudsf_UnstructuredDataManagement_Unsubscribe service operation is used by an NF service consumer to un-subscribe from notifications of data change in the UDSF, as indicated by its description. This operation requires a Subscription ID as input and returns a Result as output.