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 probability $ 10 million 60 % $ 30 million 40 % the asset retirement obligation (rounded) that should be reported on mmc's balance sheet one year after the extraction activities begin is: