A software engineering team is developing a real-time trading system for a financial institution. The system must process thousands of transactions per second while maintaining 99.99% uptime. However, the client frequently requests new features and regulatory changes require system updates every few months. Which software attribute presents the greatest challenge in this scenario and why

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Dependability - Because 99.99% uptime is extremely difficult to achieve in complex systems

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Maintainability - Because frequent updates must not compromise the system's real-time performance and reliability

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Efficiency - Because processing thousands of transactions per second is computationally intensive

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Acceptability - Because financial traders have very specific and demanding requirements

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A software engineering team is developing a real-time trading system for a finan...

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