Compute a weighted average forecast for the Week $6$ using a weight of $\mathrm{.}40$ for the most recent period, $\mathrm{.}30$ for the next most recent, $\mathrm{.}20$ for the next, and $\mathrm{.}10$ for the next.

Period $(t)$ Actual demand $(A)$

Week $1,42$

Week $2,40$

Week $3,43$

Week $4,40$

Week $5,41$

Select an answer and submit. For keyboard navigation, use the up$/$down arrow keys to select an answer.

$41\mathrm{.}33$

$41$

$41\mathrm{.}92$

d $41\mathrm{.}728$