5. Retail Method.) The following information pertains to the Roberts Co: Cost of net purchases $70,000; cost of beginning inventory = $10,000; net purchases at retail = $130,000, beginning inventory at retail = $15,000, Sales - $80,000. What is the amount of the ending inventory at retail? (Choose the closest answer). $145.000.b.$65.000 $45.000, d. $20,000 e. $30,000