The correct answers are B, C, and D. Huawei’s official resource-analysis documentation states that bottleneck resources can be identified and analyzed globally and by VDC, resource pool, and application. This directly matches options B, C, and D in your question.
Although Huawei also has resource-pool analysis views that can monitor resources from multiple dimensions such as region, resource pool, and AZ, the specific wording for bottleneck analysis in the cited Huawei documentation highlights application, VDC, and resource pool as the relevant factors used for bottleneck identification and analysis. That is why AZs should not be selected for this particular question.
So, after correcting the sentence structure, the supported dimensions for bottleneck-related analysis by O & M administrators are applications, VDCs, and resource pools. Therefore, the verified answer is B, C, D.
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