Gabriel has a contract to construct a school. The original estimate for the building envelope was $420,000. The municipality decided to expand the school building, so a change order was issued for $50,000, but Gabriel thinks the additional scope will cost $75,000. Gabriel had written a subcontract to Permasteelisa for $300,000, but when he received the owner change order he issued a change order to Permasteelisa as well for the same amount. To date, $200,000 has been invoiced. Gabriel has paid a project manager $35,000 to manage this scope of the project. What are the known costs? What is the total estimated costs at completion? $385,000;$410,000 $235,000;$410,000 $385,000;$470,000 $235,000;$470,000