Question: In the EFOPLMNwAcT file, what is the minimum number of Preferred PLMNs that must be coded, as determined by the operator, in priority order?
Option 1: At least eight
Option 2: Exactly five
Option 3: A maximum of three
Option 4: Only one (the home PLMN)
Explanation: The correct answer is 'At least eight' because this EF contains coding for multiple PLMNs, with a minimum requirement of at least eight. This ensures operators provide a sufficient list of prioritized networks for the Mobile Station to select from.