Southern Company purchased machinery with a list price of $96,000. The seller granted Southern Company a 10 percent discount so Southern paid $86,400 for the machinery. Southern Company also paid $600 for shipping and paid sales tax of $4,500 to purchase the machinery. Southern Company estimates that the machinery will have a useful life of 10 years and a salvage value of $30,000. If Southern Company uses straight-line depreciation, annual depreciation will be $5,640 O $9,150. O $6,150. $6,108. $5,880