Equipment with a cost of $$83,683,$ an estimated residual value of $$5,017,$ and an estimated life of $12$ years was depreciated by the straight$-$line method for $6$ years. Due to obsolescence, it was determined that the remaining useful life should be shortened by $5$ years and the residual value changed to zero. The depreciation expense for the current and future years is

a$.$ $$3,695\mathrm{.}83$

b$.$ $$44,350\mathrm{.}00$

c$.$ $$4,031\mathrm{.}82$

d$.$ $$39,333\mathrm{.}00$