Bob$$ Carlton's golf camp estimates the workforce requirements for its services over the next two years in the accompanying table.

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Part $2$

Assume that Carlton is permitted to employ some$$ uncertified, part$-$time$$ instructors, provided they represent no more than $15$ percent of the total workforce hours in any quarter. Each$$ part$-$time instructor can work up to $240$ hours per$$ quarter, with no overtime or undertime cost. Labor costs for$$ part$-$time instructors are per hour. Hiring and training costs are per uncertified$$ instructor, and there are no layoff costs.

Part $3$

a$.$ Consider the following proposed$$ low$-$cost$,$ mixed$-$strategy$$ plan:

Quarter

Demand

$($hours$)$

Workforce

Cert Hires

Cert Layoffs

PT Work Hours

PT Hires

PT Fires

Overtime

$($hours$)$

$1$

$4,200$

$9$

$1$

$2$

$6,400$

$10$

$1$

$720$

$3$

$880$

$3$

$3,000$

$8$

$2$

$3$

$4$

$4,800$

$8$

$720$

$3$

$240$

$5$

$4,400$

$8$

$560$

$6$

$6,240$

$10$

$2$

$720$

$720$

$7$

$3,600$

$8$

$2$

$3$

$8$

$4,800$

$8$

$720$

$3$

$240$

Total

$69$

$4$

$4$

$3,440$

$9$

$6$

$2,080$

Total cost for this plan would be $$$

$$

enter your response here. $($Enter your response as an$$ integer.$)$

Part $4$

b$.$ Having a workforce consisting of both regular and temporary employees

A$.$

reduces hiring and firing of certified instructors.

B$.$

reduces overtime.

C$.$

reduces total costs.

D$.$

a and b only.

E$.$

b and c only.

F$.$

all of the above.