The following table presents cost, capacity, and demand data for a transportation problem in Stephanie Robbin$$s furniture company. Set up the appropriate transportation table and find the optimal solution using Excel's solver.

From$/$To $123$ Supply

A $3010520$

B $10101030$

C $20102575$

Demand $406055$

a$.$ Is the problem balanced?

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$,$ If not, where?

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$,$ and by how much?

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b$.$ What is the optimal cost? $

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