Back round:

I have to come up with a liners optimization model for ten factories that
can each produce one of three products. The stipulation is that only one
product can be made at each factory and we need to reach minimum production
units for all three products acroos all ten factories. Also there are a
maximum number of a product units that can be produced at each factory. Each
of the ten factories has differeing operation costs and profit margins so I
am looking to maximize profits across the board.

Problem.

I have come up with all the formulas for all the constraints, but I cant
seem to come up with at formula that says that at Factory 1 which can only
produce a total of 100 units of either product A, B, and C. So that when you
produce 100 units of A then your produce 0 of B and 0 of C. Or any
combination Solver comes out with as being the one that maximizes profit
across all ten factories.