At what point during performance testing does monitoring with the load testing tool begin?

Performance monitoring mustbegin simultaneously with test executiontocapture system behavior in real-time. This ensures thatbottlenecks and performance issues are identified immediately.

Option A (After testing is concluded)is incorrect becausehistorical monitoring does not help in real-time analysis.

Option B (Before execution)is incorrect because monitoring needsactive system loadto measure performance.

Option C (Immediately after execution)is incorrect because itmisses runtime metrics.