First cost$=$$$80000$

Book depreciation life $=7$ years

MACRS property class $=7$ years

Salvage value $=24000$

n A B C D $1800022857114292285728000163271959216327380001166113994116614800051549996833058000071406942680000714069427800007140694280035700$

Identify the depreciation method used for each depreciation schedule as one of the following: a$.$ Double$-$declining$-$balance depreciation b$.$ Straight$-$line depreciation c$.$ DDB with conversion to straight$-$line depreciation, assuming a zero salvage value d$.$ MACRS seven$-$year depreciation with the half$-$year convention e$.$ Double$-$declining$-$balance $($with conversion to straight$-$line depreciation$)$