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The corneer points of a feasible region, determined by a system of linear inequations, are `(0,0),(1,0),(4,3),(2,1) and (0,1).` If the objective function is `Z = 2x - 3y,` then the minimum value of Z is :

A

`-4`

B

`-2`

C

`-6`

D

`-5`

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