Regarding the installation of the BBU alarm line, which of the following is correct? (Multiple choice)
A . Connect from the top COM IN port of the APM30 to the MON1 interface of the BBU power board UPEU
B . Connect the COM IN from the AMP30 door panel to the APM30 power module PMU COM_485 interface with a network cable.
C . Connect from the top COM IN port of the APM30 to the GE port on the UMPT on the 38U
D . Connect from the COM IN on the AMP30 door panel to the BBU FAN module
Answer: AB