XPIC can be used with ATPC, but it is generally not recommended. If you need to use it together, what should you pay attention to? (Multiple choice)

XPIC can be used with ATPC, but it is generally not recommended. If you need to use it together, what should you pay attention to? (Multiple choice)
A . In conjunction with AM, set the upper threshold of the ATPC to the lower threshold plus 5d
C . A group of XPIC’s horizontal polarization direction links and vertical polarization direction links should be configured with the same ATPC parameters (ATPC enable, ATPC adjustment threshold).
D . Set the difference between the upper and lower thresholds of ATPC as small as possible, and it is recommended to be 5d
F . Set the lower threshold of ATPC to be greater than the planned AM sensitivity in the full capacity modulation mode plus 14d

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Answer: BC