For a machine to be a good candidate for preventive maintenance Question 55 options: the consequences of failure must be relatively unknown and, therefore, risky. the consequences of failure must exceed the cost of preventive maintenance and the MTBF distribution must have a relatively low standard deviation. the consequences of failure must exceed the cost of preventive maintenance and the MTBF must be relatively high. the consequences of failure must exceed the cost of preventive maintenance and the MTBF distribution must have a large standard deviation. the consequences of failure must exceed the cost of preventive maintenance and the MTBF must be relatively low