The following aggregate plan is given. What is the total available production time in period $($month$)6$ if each worker works $6\mathrm{.}4$ hours per day and $25$ days per month?

Period,t

No$.$ Hired

No$.$ Laid Off

Workforce Size

Overtime $($hours$)$

Inventory

Stockout,

Subcontract

Total Production

Demand

$0$

$0$

$0$

$80$

$0$

$1,000$

$0$

$0$

$1$

$0$

$16$

$64$

$0$

$2,560$

$0$

$0$

$2,560$

$1,000$

$2$

$0$

$0$

$64$

$0$

$2,120$

$0$

$0$

$2,560$

$3,000$

$3$

$0$

$0$

$64$

$0$

$880$

$0$

$0$

$2,560$

$3,800$

$4$

$0$

$0$

$64$

$0$

$0$

$1,220$

$140$

$2,560$

$4,800$

$5$

$0$

$0$

$64$

$0$

$0$

$660$

$0$

$2,560$

$2,000$

$6$

$0$

$0$

$64$

$0$

$500$

$0$

$0$

$2,560$

$1,400$

Question $41$ options:

$16$o

$9600$

$640$

$10240$