A package of 8-count AA batteries costs $ 6.16. A package of 20-count AA batteries costs $ 15.60. Which statement about the unit prices is true? 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 $ 0.78 per battery. The 20-count pack of AA batteries has a lower unit price of $ 0.77 per battery. The 8-count pack of AA batteries has a lower unit price of $ 0.77 per battery.
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