2: Lee Company purchased an equipment at the beginning of year 2021. The equipment has an estimated useful-life of 5 years. An accountant presented the table below for this equipment using three different methods: (1) the straight-line method, (2) the activity method, and (3) the double-declining-balance method. Year Straight-Line Activity Method Double-Declining-Balance 2021 18,000 30,000 40,000 2022 18,000 24,000 24,000 2023 18,000 18,000 14,400 2024 18,000 12,000 8,640 2025 18,000 6,000 2,960 Total 90,000 90,000 90,000 Based on the correct figures above, answer the following: a. What is the cost amount of this equipment? b. What is the residual value for this equipment? c. Which method will produce the highest charge to income in year 2021? d. Which method will produce the highest charge to income (expenses) in year 2024? e. Which method will produce the highest book value for the equipment at the end of year 2023