[25 points] Codeco is a software company specializing in cybersecurity. In 2014, they decided to expand their operations by buying new computers to hire extra staff. Since their main assets are computers, it is safe to assume that these purchases are under CCA class 10 with a CCA rate of 30%, the corporate tax rate for them is 45%. Codeco was hoping to have a return on their investment characterized by an after- tax MARR of 15%. Over the next 5 years, Codeco gradually increased their capacity by buying computers in batches. They also had to sell some of the computers which were used more frequently. The table below summarized their asset purchases and disposals: Year Purchase/Disposal Dollar Value of transaction 2014 Purchase $14,000 2014 Purchase $8,500 2016 2016 Sale Purchase $20,000 $4,000 2017 Purchase $14,000 2018 Sale $3,000 Calculate the CCA amount for the year 2018 as well as the net present worth of their depreciation tax savings.