Which of the following public network bandwidth billing modes does Huawei Cloud support? (Multiple Choice)

Which of the following public network bandwidth billing modes does Huawei Cloud support? (Multiple Choice)
A . Enhanced 90 billing: only need to pay a small amount of the guaranteed bandwidth fee in advance, and charge at the end of the month based on the bandwidth value and actual usage duration after removing the peak bandwidth multiple times
B . Bandwidth billing: charge according to the size of the purchased bandwidth and the duration of use
C . Enhanced 95 billing: only need to pay a small amount of the guaranteed bandwidth fee in advance, and charge at the end of the month based on the bandwidth value and actual usage time after multiple peak bandwidth removals
D . Flow rate billing: charge according to the actual use flow, can be used with shared flow package, more preferential

Answer: BCD