Question: Under what condition(s) does the MAC entity increment `PREAMBLE_POWER_RAMPING_COUNTER` by 1 for a Random Access Preamble transmission, when not initiated by a PDCCH order for an LTM candidate cell?
Option 1: If `PREAMBLE_TRANSMISSION_COUNTER` is greater than one and SSB or CSI-RS selected remains unchanged.
Option 2: If no LBT failure indication was received from lower layers for the last Random Access Preamble transmission.
Option 3: If both conditions in Option 1 and Option 2 are met, and a notification of suspending power ramping counter has not been received.
Option 4: If all of the following are true: `PREAMBLE_TRANSMISSION_COUNTER` is greater than one; no LBT failure indication was received for the last transmission; SSB or CSI-RS selected is unchanged; and no notification of suspending power ramping counter has been received.
Explanation: According to the specifications, `PREAMBLE_POWER_RAMPING_COUNTER` is incremented by 1 under specific conditions when the Random Access procedure is not initiated by a PDCCH order for an LTM candidate cell. These conditions include: `PREAMBLE_TRANSMISSION_COUNTER` being greater than one, no indication of LBT failure from lower layers for the last transmission, the SSB or CSI-RS selection remaining unchanged from the last Random Access Preamble transmission, and not having received a notification to suspend power ramping counter increments. Thus, all these conditions must be met, making Option 4 the correct answer.