A maintenance manager observes that the Mean Time Between Failures (MTBF) for a critical asset class has been steadily increasing. However, the overall maintenance cost per unit produced has also increased significantly over the same period. What is the most likely cause of this situation?
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A
The maintenance strategy is becoming more reactive, leading to expensive emergency repairs.
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B
The increase in MTBF is being achieved through an overly aggressive and expensive preventive maintenance program.
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C
Production operators are causing more frequent, minor breakdowns that are not captured in MTBF data.
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D
The cost of spare parts has decreased, allowing for more frequent component replacement.