An idle mode UE is camping on an LTE1800 cell with priority 4 an

An idle mode UE is camping on an LTE1800 cell with priority 4 and RSRP = -90dBm. An inter-frequency LTE2600 neighbour cell has priority 5 and RSRP = -100dBm. If RSRQ-based cell reselection is disabled, qRxLevMin on both layers is -120dBm and Pcompensation=0. What is the required parameter setting in the LTE1800 cell in order to make UE reselect to the LTE2600 cell?

A.Cell reselection hysteresis is set to less than 10dB (Qhyst<10db).>

B.Minimum required level from higher priority cell is set to less than -100dBm （Threshx.high <20db).>

C.Minimum required serving cell level threshold to select to a lower priority layer is set to higher than -90dBm (Thresholdserving,low >30dB).

D.Inter-frequency idle mode search threshold is set to higher than -90dBm (sNonIntrSearch> 30dB).

正确答案是B