Which of the following are the characteristics of Huawei NetCol5000-A row-level precision air conditioner cooling capacity adjustment?

Which of the following are the characteristics of Huawei NetCol5000-A row-level precision air conditioner cooling capacity adjustment?
A . DC inverter compressor, which can 20%~100% infinitely adjust cooling capacity.
B . Invariable frequency compressor, can’t adjust cooling capacity infinitely.
C . When the load is lower than 20%, the electric heating heat compensation is turned on, and the compressor is continuously operated without stopping.
D . When the load is lower than 30%, the compressor starts and stops frequently, and the valve frequently actions and is easily stuck.

Answer: AC