Kramden Corporation acquired Norton Company several years ago for $500 million. Goodwill of $100 million was recognized on the transaction. Through 20X0, no goodwill impairment charges have been taken. At December 31, 20X1, the carrying value of Norton, including unamortized excess cost and goodwill, is $620 million. Required: For each of the following independent scenarios, determine the amount of goodwill impairment, if any, Kramden should record. 1. Kramden determines that Norton's fair value is $650 million. 2. Kramden determines that Norton's fair value is $600 million. 3. Kramden determines that Norton's fair value is $500 million