Qi Associates purchased a generator on January 1, 2018, for $9,000. The generator was estimated to have a five-year life and no salvage value. At the beginning of 2020, the company revised the expected life of the asset to a total of six years and the salvage value remained zero. Using straight-line depreciation, the depreciation expense recorded in 2020 would

a. decrease net assets and equity by $1,800.

b. decrease net assets and equity by $1,500.

c. decrease net assets and equity by $1,350.

d. decrease net assets and equity by $ 900.

On January 1, 2019, Fields purchased a machine for $40,000. On that same date, Fields paid shipping expenses of $1,000 to have it delivered as well as installation costs of $1,400. Fields estimated the machine would have a useful life of ten years and an estimated salvage value of $5,000. If Fields records depreciation using the straight-line method, depreciation expense for 2019 is

a. $3,500.

b. $3,600.

c. $3,740.

d. $4,240.