An architect is evaluating SLA commitments for a multi-region Azure deployment. If each region has a 99.9% availability SLA, what is the composite availability when using active-active across two regions with automatic failover?
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A
99.9% — same as a single region
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B
99.99% — multiplicative improvement through redundancy
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C
99.0% — lower due to failover overhead
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D
100% — guaranteed by Microsoft for multi-region