Problem $6-03$

$\backslash$table$[[,$To$],[$From$,$Hamiltorr,Butler,Clermont$],[$Southern Gas,$10,20,15],[$Northwest Gas,$12,15,18]]$

a$.$ Choose the correct network representation of this problem.

$($i$)$

$($a$)$

$($iii$)$

$($iv$)$

b$.$ Develop a linear programming model that can be used to determine the plan that will minimize total distribution costs. If the constant is $"1"$ it must be entered in the box.