The current in an initially de$-$energized inductor will reach $\_\_\_\_\_\_\_\_$ of its final value $1\mathrm{.}5$ time constants after voltage is applied to the inductor.

A$.77\mathrm{.}7\%$

B$.22\mathrm{.}3\%$

C$.86\mathrm{.}5\%$

D$.36\mathrm{.}8\%$