If a fixed asset, such as a computer, were purchased on January 1 for $3,750 with an estimated life of 3 years and a salvage or residual value of $150, the journal entry for monthly expense under straight-line depreciation is Oa. Depreciation Expense Accumulated Depreciation Ob. Accumulated Depreciation Depreciation Expense Oc. Depreciation Expense Accumulated Depreciation Od. Accumulated Depreciation Depreciation Expense $100 $100 1,200 1,200 1,200 1,200 100 100