The main ingredient in a certain prescription drug capsule costs $500.00 per kilogram. If each capsule contains 600 milligrams of the ingredient, what is the cost of the ingredient in a capsule? (1 kilogram = $${10}^{6}$$ milligrams)
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A$0.30
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B$0.83
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C$1.20
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D$3.00
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E$3.33