Eva is at a sushi restaurant. She ordered 2 pieces of squid for a total of $3.50, 1 piece of eel for $3.25, 3 pieces of tuna for a total of $6.75, and 4 pieces of crab for $8.00. Which list shows the unit cost of each piece of sushi from least to greatest?

Divide each total cost by the number of pieces: squid costs $3.50 ÷ 2 = $1.75 per piece, eel costs $3.25 ÷ 1 = $3.25, tuna costs $6.75 ÷ 3 = $2.25, and crab costs $8.00 ÷ 4 = $2.00. From least to greatest, the unit costs are squid, crab, tuna, then eel, which is choice A.

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