The following payoff table provides profits based on various possible decision alternatives and various levels of demand. States of Nature Demand Alternatives Low Medium High Alternative 1 80 120 140 Alternative 2 90 90 90 Alternative 3 50 70 150 The probability of a low demand is 0.4, while the probability of a medium and high demand is each 0.3. What is the expected value of perfect information (EVPI)? Select one: a. 7 b. 5 c. 6 d. 8