1A farming company purchased a machine for $2,400. It has an estimated residual value of $400 and an estimated useful life of 4 years, or 10,000 hours of operation. It was used 4,000 hours in the first year, 3,000 in the second, 2,000 in the third and 1,000 in the fourth. If the firm choses to use the straight line depreciation method how would that expense compare to them choosing to use the units of production depreciation method?

1. Straight line expense is greater in every year
2. Straight line expense is less in every year
3. Straight line expense is greater in the first two years and less in the last two years
4. Straight line expense is less in the first two years and greater in the last two years
5. The two methods lead to equal expense every year