The objective function Z=4x+3y can be ...

The objective function `Z=4x+3y` can be maximized subjected to the constraints `3x+4ylt=24 ,\ 8x+6ylt=48\ ,\ xlt=5,\ ylt=6; x ,\ ygeq0` a. at only one point b. at two points only c. at an infinite number of points d. none of these

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