$2.(3$ p$.)$ Which of the above three patterns of shipments is the lowest transportation cost solution? Fully justify your answer.

$3.(10$ p$.)$ For your optimal solution found in p$.2$ above, do alternative optimal solutions exist? Fully justify your answer.

See the notes below:

Note $1$: For each of the three patterns of shipments found in p$.1$ above, include three relevant Excel$$s Solver printouts $($Answer Report, Sensitivity Report, and Sheet$)$ as exhibits at the end of your project $($you may use PrintScreen; please make sure that the numbers can be clearly seen$).$ Save everything as one and only one file in the pdf format.

Note $2$: A report with no Excel$$s Solver calculations$/$printouts included will receive zero $(0)$ points.