The three virtual machines share one CPU thread, and the main amount is 2.86Hz. The resource reservation of VM1 is 1000MHZ, VM2 and VM3 do not reserve resources; the quota of VM1 is 1000, the quota of VM2K is 2000, the quota of VM3 is 4000; the upper limit of three virtual machines is 2000MHZ; the CPU usage of three virtual machines is 100% of cases, the CPU resource of VM3 is ().

The three virtual machines share one CPU thread, and the main amount is 2.86Hz. The resource reservation of VM1 is 1000MHZ, VM2 and VM3 do not reserve resources; the quota of VM1 is 1000, the quota of VM2K is 2000, the quota of VM3 is 4000; the upper limit of three virtual machines is 2000MHZ; the CPU usage of three virtual machines is 100% of cases, the CPU resource of VM3 is ().
A . 1200MHz
B . 1600MHz
C . 1800MHz
D . 2000MHz

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Answer: A