Which of the following statements is true about "utils," or units of utility? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a They are meant to be an abstract unit to model the functional behavior of dollars (or any unit money). b All rational persons should have the same assignment of utils across outcomes. c A utility assignment is meant to capture everything we care about except for money, which can't be modeled by a utility function because of diminishing marginal utility. d None of the above is true.