Question: What is the condition under which the measurement "Number of successful reconfigurations of LWIP DRB" is triggered?
Option 1: On receipt of RRCConnectionReconfiguration message
Option 2: On transmission of RRCConnectionReconfigurationComplete message
Option 3: On receipt of RRCConnectionReconfigurationComplete message corresponding to transmitted RRCConnectionReconfiguration message
Option 4: On failure of LWIP DRB reconfiguration
Explanation: The measurement "Number of successful reconfigurations of LWIP DRB" is triggered when the RRCConnectionReconfigurationComplete message is received, and it corresponds to the transmitted RRCConnectionReconfiguration message that triggered the measurement "Number of attempted reconfigurations of LWIP DRB". This indicates a successful reconfiguration of LWIP DRB.