In 2020, ABC changed the method of depreciating its assets from the straight-line method to the sum of the digits method. In the 2020 10K report, what method will be used to determine income for the 2020 and 2019 comparative periods? Select one: a. In 2020 the straight line method will be used and in 2019 the sum of digits method. b. In 2020 the method of adding the digits will be used and in 2019 the straight line method. c. Both years will be reported using the sum of the digits method. d. Both years will be reported using the straight line method.