Which TWO of the following are required to use the hot-swap memory feature of the x445 while being operating system independent？（）
- AMemory Mirroring must be enabled in the BIOS.
- BRedundant bit steering must be enabled in the BIOS.
- CDIMMs must be the same size and speed as the DIMMs being replaced.
- DMemory Mirroring must be enabled in the operating system.
- EDIMMs can be of same size or larger or same speed or faster.