On $1-1-2001,$ ABC Co$.$ purchased a delivery truck. The cost was $$15000,$ the expected salvage value was $$5000,$ the estimated useful life in years was $4$ years, and the estimated useful life in miles was $250000$ miles. Compute annual depreciation expense for the first year using the units$-$of$-$activity method $($assume that ABC Co$.$ drives its delivery truck $15000$ miles in the first year$).$

a $11311\mathrm{.}23$

b$.600$

c $\mathrm{.}900$

d$.$ All answers are false

e$.475$

f$.14400$

g$.1000$