Question: In E-UTRA and NR, what is the purpose of the `CellReselectionSubPriority` Information Element (IE) in relation to cell reselection priority?
Option 1: To override the `cellReselectionPriority` value for a specific carrier frequency
Option 2: To set an absolute priority for all carrier frequencies in E-UTRA and NR
Option 3: To add a fractional value to the `cellReselectionPriority` to obtain the absolute priority for a concerned carrier frequency
Option 4: To determine the handover threshold between E-UTRA and NR
Explanation: The correct answer is Option 3 because, according to the specifications, the `CellReselectionSubPriority` IE is used to add a fractional value (e.g., 0.2, 0.4) to the existing `cellReselectionPriority` value. This combined value then determines the absolute priority of the carrier frequency for cell reselection in both E-UTRA and NR networks, allowing for finer granularity in prioritizing frequencies.