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A plant manager considers the operational cost per hour of five machine alternatives. The cost per hour is sensitive to three potential weather conditions: cold, mild, and warm. The following table represents the operations cost per hour for each alternative-state of nature combination: States of Nature Alternatives Weather related cost per hour Cold cost/day Mild cost/day Warm cost/day $42 $40 $45 $45 $42 $47 Machine 1 Machine 2 Machine 3 $40 $35 $54 Machine 4 $60 $30 $48 Machine 5 $45 $40 $45 Using the optimistic criterion, which alternative is best