Huawei OceanStor 9000 uses the erasure code technology to protect data. A site has six nodes, and the customer requires that data can be restored if three of the disks where a stripe is distributed are faulty.
Which redundancy levels can be used to meet the requirement? (Multiple Choice)
A . 4+3:1
B . 6+3
C . 4+2
D . 6+4:1
Answer: AD