Can someone help me draw the logic gate circuit of the problem below please. And Help me understand it

Rods of varying length (± 10%) travel one at a time in the direction of their longest axis on a conveyor belt. A mechanical arm pushes rods that are within specification (± 5%) off the belt to one side. A second arm pushes rods that are too long to the other side. Rods that are too short remain on the belt. Use three light barriers (light source + photocell) as sensors, and design the combinational circuits that activate the two arms.

Question

Can someone help me draw the logic gate circuit of the problem below please. And Help me understand it

Rods of varying length (± 10%) travel one at a time in the direction of their longest axis on a conveyor belt. A mechanical arm pushes rods that are within specification (± 5%) off the belt to one side. A second arm pushes rods that are too long to the other side. Rods that are too short remain on the belt. Use three light barriers (light source + photocell) as sensors, and design the combinational circuits that activate the two arms.
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