Day Corporation purchased a patent on January 1, 2012 for $360,000. The patent had a useful life of 10 years at that date. In January of 2013, Day successfully defends the patent at a cost of $162,000, extending the life of the patent to 12/31/24. What amount of amortization expense should be recorded in 2013?Show calculations.
a. $36,000
b. $40,500
c. $43,500
d. $54,000