6. You are asked to evaluate a mining project with costs in the developmental stage followed by benefits in the production stage and ending with significant costs at the end of the study period for reclamation of the land to its original state. You have determined that the project has two positive IRRs. a. Summarize a strategy for modifying the CB C cash flow pattern into a simpler CB cash flow pattern with just one IRR solution and a straightforward decision rule. b. Ilustrate your strategy with the following example: Capital cost at t-0 is $70 million; Constant benefits of $40 million in years 1-5; Year 6 reclamation cost of S140 million; Appropriate MARR = 20%. Set up the cash flow diagram, but do not solve for IRR