Which of the read and write strategies of Huawei Oceanstor V3 storage system is correct?

A: Read and write strategies include permanent, default, recycling. B: Recycling strategy is suitable for business scenarios that require high performance and small amount of data. C: Select out the recycling strategy when the data or write data is the lowest priority. D: Resident strategy is suitable for large read and write data, and read-only scenes.