23. Montana Mining Co. (MMC) paid $200 million for the right to explore and extract rare metals from land owned by the state of Montana. To obtain the rights, MMC agreed to restore the land to a suitable condition for other uses after its exploration and extraction activities. MMC incurred exploration and development costs of $60 million on the project. MMC has a credit-adjusted risk free interest rate is 7%. It estimates the possible cash flows for restoring the land, three years after its extraction activities begin, as follows: Cash Outflow $10 million $30 million Probability 60% 40% a. How much is the total expected cash outflow related to the retirement of the mining? b. How much asset retirement obligation (rounded) that should be recognized by MMC at the beginning of the extraction activities? c. What is the total cost of the metal mining