7. Bedrock Mining Company purchased a mine for $80 million which is estimated to have 250,000 tonnes of ore and a residual value of $10 million. (a) In the first year 50,000 tonnes of ore are extracted and sold. Prepare the journal entry to record amortization expenses for the first year. (Application 13 marks) (b) In the second year 150,000 tonnes of ore are extracted but only 125,000 tonnes are sold. Prepare the journal entry to record amortization expense for the second year. (Application 13 marks) (c) What amount and in what account are the tonnes of ore NOT sold reported? (Application 12 marks)