In Huawei FusionCompute, which of the following descriptions of memory reuse is incorrect?

In Huawei FusionCompute, which of the following descriptions of memory reuse is incorrect?
A . After memory multiplexing is turned off, the sum of the memory of all virtual machines is less than or equal to the sum of the actual available physical memory
B. Turning off memory reuse requires that the memory reuse rate of all hosts in the cluster be less than or equal to 100%
C. The use of memory reuse will degrade the performance of the virtual machine
D. The administrator can turn on or off the memory reuse function at any time

Answer: C