31. Golden Sales has bought $135,000 in fixed assets on January 1st associated with sales equipment. The residual value of these assets is estimated at $10,000 after they service their 4 year service life. Golden Sales managers want to evaluate the options of depreciation.(a) Compute the annual straight-line depreciation and provide the depreciation journal entry to be posted at the end of each of the years.(b) Write the journal entries for each year of the service life for these assets using the double declining balance method.