The southbound device sends an AT command to SoftRadio through the serial port, and the result is that SoftRadio does not have any information prompt, possible reasons are ()? (Multiple choice).
A.
SoftRadio received an unrecognizA, Ble ATcommand
B.
There is a problem with the connection of the southbound device to the PC, SoftRadio does not receive the data .
Chosen Answer:
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