The shaded region in the figure is the solution set of the inequalities:

Question

$5x + 4y \geq 20, \, x \leq 6, \, y \geq 3, \, x \geq 0, \, y \geq 0$

$5x + 4y \leq 20, \, x \leq 6, \, y \leq 3, \, x \geq 0, \, y \geq 0$

$5x + 4y \geq 20, \, x \leq 6, \, y \leq 3, \, x \geq 0, \, y \geq 0$

$5x + 4y \geq 20, \, x \geq 6, \, y \leq 3, \, x \geq 0, \, y \geq 0$

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