question: What is the role of a Relay Node (RN) in E-UTRAN? [3GPP Release 17] option 1: To terminate the radio protocols of the E-UTRA radio interface option 2: To manage the EPS bearers and session for the RN option 3: To handle the S1 and X2 interfaces between the DeNB and the MME option 4: To support PWS towards UEs option 5: To perform the RRC connection establishment for the RN 