Which of the following descriptions about memory multiplexing technology is correct?

Which of the following descriptions about memory multiplexing technology is correct?
A . If the memory usage of the user virtual machine is relatively high, it can be optimized by increasing the memory reuse ratio
B. Turn on the memory multiplexing technology, which can increase the number of virtual machines deployed on the physical host to a certain extent
C. Enable memory multiplexing technology, the higher the multiplexing ratio, the better the performance of the virtual machine
D. The total memory of all virtual machines created by the user with memory reuse technology must be smaller than the physical memory

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Answer: B