Suppose our multiple objective analysis uses 3 modeling objectives (call them X, Y and Z), which we have quantified and converted to utilities using proportional scoring. We have carefully determined that we should use weights of 0.17, 0.34 and 0.49 respectively. Which of the following best describes the meaning of these weights? a. The weights cannot be interpreted directly. b. Y is twice as important as X. c. The 2:1 ratio of the weights of Y and X is what was necessary to reflect the decision makers willingness to trade off a worsening in Y for an improvement in X. d. The set of weights is a mathematical result that arises from the exchange rates between each pair of objectives. e. All of the above f. None of the above g. Some other combination (more than one, but not all)