$2.$ Solve the following transshipment problem $($cost minimization$)$ using Excel Solver and fill in the blanks below.

a$.$ The minimum total cost $\backslash (=\backslash$$ $\backslash )$

b$.$ The total number of units shipped to destination $\backslash (5=\backslash )$ units and to

destination $\backslash (6=\backslash )$ units.

c$.$ The total number of units shipped from source $1$ to intermediary $\backslash (3=\backslash )$ units, and the total shipped from source $2$ to intermediary $\backslash (\backslash$mathbf$\{3\}=\backslash )$ units.

d$.$ The total cost of shipping units from intermediary $\backslash (\backslash$mathbf$\{3\}\backslash )$ to destination $\backslash (\backslash$mathbf$\{5\}=\backslash$$ $\backslash )$ and the total cost of shipping units from source $2$ to intermediary $\backslash (3=\backslash$$ $\backslash )$