Which of the following comparison statement about UDIMM, RDIMM, LRDIMM are correct? (Multiple Choice)

Which of the following comparison statement about UDIMM, RDIMM, LRDIMM are correct? (Multiple Choice)
A . Compared with RDIMM, LRDIMM reduces the load and power consumption of the memory bus and provides the maximum supported capacity of the memory
B . UDIHM needs to ensure that the transmission distance between the CPU and each memory particle is equal, so that parallel transmission is effective, and this requires a higher manufacturing process, so UDIMM is lower in capacity and frequency
C . UDIMM, unbuffered dual inline memory module, the address and control signals go directly to the DRAM chip on the DIMM without the buffer, so the price is cheap
D . 0 RDIMM supports Buffered mode and high-performance Registered mode, which is more stable than UDIMM, and supports the maximum capacity of server memory

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Answer: BC