Can you help me answer this question please?

An audit of the books of Grinch company was conducted for the year ending December 31, 2018. In examining the books, the auditor found that certain items had been overlooked or incorrectly recorded. These items are:

1. The company purchased a copyright in early 2016 for $60,000. The bookkeeper has not amortized the copyright. The useful life at purchase was 10 years.

1. During 2018, the company sold fully depreciated equipment that originally cost $25,000 (no salvage value). The company incorrectly recorded the sale as follows:

Cash3,500

Equipment3,500

1. A $12,000 insurance premium paid on January 1, 2017, for a policy that expires on December 31, 2019, was charged to insurance expense.

1. The company failed to accrue sales commissions payable of $3,000 at the end of 2017. It was therefore expensed at the beginning of 2018.

1. Also, at December 31, 2018, Grinch decided to change the depreciation method on its office equipment from double-declining balance to straight line. The equipment had an original cost of $40,000 when purchased on January 1, 2015. It has a 10-year useful life and no salvage value. Depreciation expense recorded prior to 2018 under the double-declining balance method was $19,520. Grinch has already recorded 2018 depreciation expense of $4,096 using the double-declining balance method.

Instructions:

Prepare the journal entries necessary in 2018 to correct the books, assuming the books have not been closed. Ignore all tax effects.