$1.$ The stock cycle for HE $($make $+$ sell$)$ was computed at $18\mathrm{.}5$ weeks. How much of this is required for the make part?

Choose the correct answer:

$0$ points

$11\mathrm{.}0$

$12\mathrm{.}7$

$17\mathrm{.}6$

$13\mathrm{.}8$

Can not tell from data