Nutanix Metro Availability and Synchronous Replication have very strict networking requirements to ensure that real-time data mirroring does not introduce unacceptable application latency. The industry-standard requirement for Nutanix synchronous operations is a maximum Round Trip Time (RTT) latency of 5ms between the two primary clusters (Site 1 and Site 2). According to the diagram provided in the question, the latency between Site 1 and Site 2 is 25ms RTT. This latency is significantly higher than the 5ms threshold and will prevent the Metro Availability configuration from functioning correctly. While the latency to the Witness VM (200ms RTT) is perfectly acceptable (Option D), and having a Witness at a third site (Option A) is a best practice, the " data path " between the storage clusters is the bottleneck here. If an administrator attempts to enable Metro with 25ms of latency, the guest VMs would experience severe performance degradation because every write would be delayed by the 25ms it takes to receive an acknowledgment from the remote site. Therefore, the high latency between the data-serving sites is the primary configuration issue that must be resolved, typically by moving the clusters closer together or upgrading the inter-site fiber connection.