please explain how these answer are correct

Given the following conditional value table: Very Favorable Market $300,000 $160,000 $120,000 $0 States of Nature Average Market $210,000 $100,000 $70,000 $0 Unfavorable Market - $280,000 - $15,000 - $8,000 $0 Alternatives Build new plant Subcontract Overtime Do Nothing a) Using the decision making under uncertainty with the criterion of Maximax The appropriate decision will be Build new plant The value of the retum under this decision is $ 300,000 b) Using the decision making under uncertainty with the criterion of Maximin The appropriate decision will be Do Nothing The value of the retum under this decision is so c) Using the decision making under uncertainty with the criterion of Egunly.X The appropriate decision will be subcontract The value of the retum under this decision is $ 81666 (enter your answer as a whole number)