Which of the following statements accurately describe characteristic(s) of decision-tree analysis as it is conducted with respect to project evaluation? Ka) When using a decision-tree analysis, we assess the earliest decision first and then gradually work our way from left to right until we reach the most distant decision. (b) An advantage of the technique is that you don't need to know what the appropriate discount rate is when evaluating a project you simply use the risk-free rate of return. (c) It is most suitable for projects without real options. (d) More than one of the above statements are correct. (e) None of the above statements are correct