I am confused with part B, please assist.

Problem 22-6 (Part Level Submission) On December 31, 2017, before the books were closed, the management and accountants of Indigo Inc. made the following determinations about three pieces of equipment. Equipment A was purchased January 2, 2014. It originally cost $541,000 and, for depreciation purposes, the straight-line method was originally chosen. The asset was originally expected to be useful for 10 years and have a zero salvage value. In 2017, the decision was made to change the depreciation method from straight-line to sum-of-the-years'-digits, and the estimates relating to useful life and salvage value remained unchanged 2. Equipment B was purchased January 3, 2013. It originally cost $190,500 and, for depreciation purposes, the straight-line method was chosen. The asset was originally expected to be useful for 15 years and have a zero residual value. In 2017, the decision was made to shorten the total life of this asset to 9 years and to estimate the residual value at $3,300. Equipment C was purchased January 5, 2013. The asset's original cost was $161,200, and this amount was entirely expensed in 2013. This particular asset has a 10-year useful life and no residual value. The straight-line method was chosen for depreciation purposes. Additional data: 1. Income in 2017 before depreciation expense amounted to $400,800. 2. Depreciation expense on assets other than A, B, and C totaled $54,400 in 2017. Income in 2016 was reported at $367,200. 4. Ignore all income tax effects. s. 100,700 shares of common stock were outstanding in 2016 and 2017. (a) Your answer is correct. Prepare all necessary entries in 2017 to record these determinations. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter o for the amounts.) Depreciation Expense 675 Accumulated Depreciat I" 675 Depreciation Expense E280 Accumulated Depreciat Equupment 161 200 Accumulated Depreciatj Retained Earnings 96 20 oamnat equipment 6120 Accumulated Depreciatj 16120