On June 1, 2019, Martin Products purchased a silver mine for $3,000,000. Costs to further explore and develop the mine totaled $1,500,000. The value of the mine once mining operations are completed is expected to total $1,000,000. Martin Products expects to extract 1,250,000 tons of ore from the mine. During 2019, 150,000 tons of ore were extracted. 80,000 tons were sold to another company for further processing. What is the balance in the Inventory - Silver Ore account at December 31, 2019? Select one: O a. $420,000 O b. $252,000 O C. $112,000 O d. $196,000