The balance sheets of Tully Corp. showed the following at December 31,2020 , and 2019 : Required: a. If there have not been any purchases, sales, or other transactions affecting this equipment account since the equipment wa first acquired, what is the amount of depreciation expense for 2020 ? b. Assume the same facts as in part a, and assume that the estimated useful life of the equipment is four years and the estima salvage value is $25,100. Determine: 1. What the original cost of the equipment was. 2. What depreciation method is apparently being used. 3. When the equipment was acquired. c. Assume that the equipment is sold on December 31,2020 , for $60,500. Prepare the horizontal model and record the journ entry for the sale of the equipment. Indicate the financial statement effect. Complete this question by entering your answers in the tabs below. If there have not been any purchases, sales, or other transactions affecting this equipment account since the equipment was first acquired, what is the amount of depreciation expense for 2020 ? Assume the same facts as in part a, and assume that the estimated useful life of the equipment is four years and the estimated salvage value is $25,100. Determine what was the original cost of the equipment? ssume the same facts as in part a, and assume that the estimated useful life of the equipment is four years and the stimated salvage value is $25,100. Determine what depreciation method is apparently being used? Assume the same facts as in part a, and assume that the estimated useful life of the equipment is four years and the estimated salvage value is $25,100. Determine when the equipment was acquired? \begin{tabular}{|l|l|l|l|l|l|} \hline Required A. & Required B1 & Required B2 & Required B3 & Required C1 & Required C2 \\ \hline \end{tabular} Assume that the equipment is sold on December 31,2020 , for $60,500. Record the journal entry for the sale of the equipment. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.) Journal entry worksheet Note: Enter debits before credits