What requirement of a probability distribution is supported by the statement "only one of these three metals is ever found if any metal is found" fulfill? Support your answer by defining the requirement. 2. What is the sunk cost if GDG opts to buy the land and conduct a geological exploration of the land? Why is it called a "sunk" cost? 3. Please construct a full probability distribution and compute an EMV for GDG's decision to purchase AND conduct a geological exploration of the land. Your answer should include a all possible outcomes, their probabilities, and payoffs as well as an EMV for the probability distribution. The first line has been completed for you in the table below to help you get started