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nvestment Timing Option: Decision-Tree Analysis The Karns Oil Company is deciding whether to drill for oil on a tract of land that the company owns. The company estimates the project would cost $15 million today. Karns estimates that, once drilled, the oll will generate positive net cash flows of $7.2 milion a year at the end of each of the next 4 years. Although the company is fairly confident about its cash flow forecast, in 2 years it will have more information about the locai geology and about the price of oil. Karns estimates that if it waits 2 years then the project would cost $16 million. Moreover, If it waits 2 years, then there is a 90% chance that the net cash flows would be $8.1 million a year for 4 years and a 10% chance that they would be $4.5 million a year for 4 years. Assume all cash flows are discounted at 10%. a. If the company chooses to drill today, what is the project's net present value? A negative value should be entered with a negative sign. Enter your answer in milions. For example, an answer of $1.2 militon should be entered as 1,2 , not 1,200,000. Round your answer to two decimal places. milion b. Using decision-tree analysis, does it make sense to wait 2 years before deciding whether to drill