Platteville Corporation has the following account balances at 12/31/10: Amortization expense $10,000 Goodwill 140,000 Patent, net of $30,000 amortization 70,000 What amount should Platteville report for intangible assets on the 12/31/10 balance sheet? $70,000 $210,000 $100,000 $220,000