The following table shows both prospective profits and losses for a company, depending on what decision is made and what state of nature occurs. State of Nature Decision 51 52 53 d 30 85 -30 d2 110 30 -40 d3 -75 -10 130 d4 25 25 25 Use the information to determine what the company should do. Show your work (regret table). (a) Show a regret table. State of Nature Maximum Regret Decision 51 52 53 d d d3 d4 (b) If an optimistic strategy is used. d O d O dz Od (c) If a conservative strategy is used. Od3 d (d) If minimax regret is the strategy. Od Oda