help me with this task!! please read carefully and take all the figures into consideration

6. Depending on the outcome of the U.S. nuclear dispute with Iran, world oil prices will be either high or low in 2020 and the following years (until 2023). If they are high, prices will be $150 /barrel in 2020 and grow at 5% each year. If they are low, prices will be $50/ barrel in 2020 and grow at 5% each year. The probability of oil prices being high is 30%. Today (2019) you are considering purchasing a license from the US government to extract oil from reserves in the Gulf of Mexico. These reserves can yield 6 million barrels per year for at least 10 years, however the license will expire after 2023. The variable costs (extraction and transportation) are $30/ barrel. In addition to the variable costs, you need to purchase 10 oil rigs at a cost of $100 million per oil rig. These must be purchased in 2019 in order to install them in time to extract in 2020 . At the end of 2023 you estimate that you will be able to sell the used oil rigs for $60 million per oil rig. The U.S. government allows you to use straight-line depreciation on this equipment. The corporate tax rate is 35% and your average cost of capital is 10%. (a) What is the maximum you are willing to pay for this license? (b) Suppose you could wait for a year to see how the U.S. versus Iran conflict gets resolved. You would still need to buy the license today, but you could choose to buy or not buy the oil rigs next year (2020). If you choose to buy them next year, you would only start extracting oil the following year (2021). The purchase and resale prices of the oil rigs remain as before. How would your answer to (a) change