A package of 8-count AA batteries costs $6.24. A package of 20-count AA batteries costs $15.80. Which statement about the unit prices is true? The 8-count pack of AA batteries has a lower unit price of $0.78 per battery. The 20-count pack of AA batteries has a lower unit price of $0.78 per battery. The 8-count pack of AA batteries has a lower unit price of $0.79 per battery. The 20-count pack of AA batteries has a lower unit price of $0.79 per battery.

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