The constraints for this optimization problem are X1 X2 X3 X4 X5 X6 X7 greater or equal than18 Sunday X1 X2 X3 X4 X5 X6 X7 greater or equal than17 Monday X1 X2 X3 X4 X5 X6 X7 greater or equal than16 Tuesday X1 X2 X3 X4 X5 X6 X7 greater or equal than16 Wednesday X1 X2 X3 X4 X5 X6 X7 greater or equal than16 Thursday X1 X2 X3 X4 X5 X6 X7 greater or equal than14 Friday X1 X2 X3 X4 X5 X6 X7 greater or equal than19 Saturday X1X7 greater or equal than0 Nonnegativity Where X1 the number of individuals hired to Schedule 1 do not work on Sunday and Monday X2 the number of individuals hired to Schedule 2 do not work on Monday and Tuesday X3 the number of individuals hired to Schedule 3 do not work on Tuesday and Wednesday X4 the number of individuals hired to Schedule 3 do not work on Wednesday and Thursday X5 the number of individuals hired to Schedule 4 do not work on Thursday and Friday X6 the number of individuals hired to Schedule 5 do not work on Friday and Saturday X7 the number of individuals hired to Schedule 6 do not work on Saturday and Sunday Question What constraint is missing Explain its importance in the current optimization problem You can answer this question in 25 sentences