On January 1, 2018, Co built a coal mine in Florida.Co is legally required to remove any metal used in building the mine, seal the entrance, and to the extent possible, restore the surrounding area to its natural condition at the end of the mine's 10 year useful life.Co estimates this process will cost $1,500,000.Assuming the current discount rate is 6%, which of the entries should Co debit in 2018 to record this Asset Retirement Obligation?

To what Account and for how much I should debit it?

Debit Mine

Debit Interest Expense

Debit Mine

Debit Accumulated Depreciation

Debit Asset Retirement Obligation