Question: In a 4-antenna configuration, what does the "ue-TxAntennaSelection-SRS-1T4R-r15" field indicate about User Equipment (UE) capabilities for a specific band combination in E-UTRA?
Option 1: The UE's ability to simultaneously transmit SRS from all four antennas.
Option 2: The UE's support for receiving SRS on any of the four antennas.
Option 3: The UE's capability to dynamically switch between TDD and FDD modes for SRS transmission.
Option 4: The UE's ability to select one antenna out of four for transmitting SRS (Sound Reference Signal) for the corresponding band.
Explanation: This is correct because the field pertains to the UE's capability to choose one antenna among four for transmitting SRS in a particular band combination, highlighting an aspect of antenna management and signal transmission strategy in telecom networks.