What must be true before performing economic analysis makes sense? Group of answer choices A decision maker must be faced with multiple decision options that differ from each other in costs, benefits, or both. When the costs and benefits of two decision options are equal When a single patient's colonoscopy results reveal the presence of polyps which are precursors to colon cancer When coworkers are trying to decide where to go to lunchWhich factor is common to all types of analysis covered in the chapter? Group of answer choices All methods required that costs of each intervention option be known All four methods depended on knowing costs from the patient's perspective All four tests require being able to place a dollar value on any improvement in health The author indicates that all four methods incorporate probabilistic elements in their calculations