Question: Which type of network subscribers are assumed to have the capability to roam into a Public Land Mobile Network (PLMN) according to 5G system service requirements?
Option 1: Subscribers of both Private and Public Networks
Option 2: Only subscribers of a Non-Public Network (NPN)
Option 3: Only subscribers of a Public Network
Option 4: Both PLMN and NPN subscribers, with specific conditions
Explanation: This is correct because the assumption explicitly states that only subscribers of a public network can roam into a PLMN, highlighting a distinction in roaming capabilities based on the type of network subscription.