Which of the following statements is correct?

Which of the following statements is correct?
A . When the base station is the smallest packet, the MML command cannot be executed, and adding a software package must be executed before the MML command can be executed.
B . When adding a software package, you can start the FTP service by clicking “FTP Tools” in the upper right corner of WEBLM
D . When the base station has the smallest packet, it can execute some MML commands, and can also perform self-test and comprehensive maintenance, etc., which basically does not affect the maintenance of the base station;
E . The RRU of LTE can only connect the AISG multi-core cable to control the ESC antenna through the RET port.

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Answer: B