The administrator runs the interface Eth-Trunk 1 command to create Eth-Trunk 1 on SW1 and...

The uploaded key marks this statement TRUE, but the Huawei VRP operating behavior makes FALSE the technically correct answer as the question is written. Creating Eth-Trunk 1 with the interface Eth-Trunk 1 command does not, by itself, enable LACP. The default Eth-Trunk working mode is manual load balancing on the relevant VRP platforms. In manual mode, the local switch does not depend on LACP negotiation with the remote switch to decide whether locally added, physically Up member interfaces can make the aggregation operational. If SW1 ' s member interfaces are physically normal and correctly added to Eth-Trunk 1, failing to add the corresponding SW2 interfaces to its Eth-Trunk can certainly break end-to-end forwarding, but it is not in itself a sufficient explanation for the local Eth-Trunk on SW1 being Down. In LACP mode, missing peer membership can prevent correct aggregation because LACPDUs are not exchanged as expected. Since LACP mode is not specified here, option B is the verified answer.