In Huawei OceanStor 9000, using Erasure code technology to protect the data. If there are seven nodes for a game point, and the customer wants the disk utilization to reach at least 70%, then what are the redundancy protection levels that can be used? (Multiple Choice)

In Huawei OceanStor 9000, using Erasure code technology to protect the data. If there are seven nodes for a game point, and the customer wants the disk utilization to reach at least 70%, then what are the redundancy protection levels that can be used? (Multiple Choice)
A . 6+1
B . 4+2
C . 6+4
D . 12+2:1

Answer: AD