Recording Amortization with a Change in Accounting Estimate On January 1 of Year 1, Kelley Company purchased a new patent for $24,480 and started amortizing it over its legal life of 20 years. At the start of Year 4, Kelley re-examined the market for the patent and determined that the total useful life of the patent (from acquisition date) was 12 years. Required a. What should Kelley record as amortization expense on the patent for Year 4? b. Record the entry for amortization in Year 4. c. What is the carrying value of the patent on December 31 of Year 4? Note: Carry all decimals in calculations; round the final answer to the nearest dollar. a. Amortization expense in Year 4: $ 0 Date b. Dec. 31, Year 4 Account Name Dr. Cr. 0 0 0 0 To record amortization. c. Carrying value, December 31, Year 4: $ 0