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COLUMBIA, S.C. (AP, WLTX) - If you're planning on a road trip this Easter weekend, this article will likely bring a smile to your face.

AAA Carolinas says the average cost of a gallon of gas in the state has fallen 18 cents since Feb. 22, to $3.44.

The Charlotte, N.C., motor club says gas prices typically go up in early spring, when refineries do maintenance and switch over to summer blends. This year, the increase happened earlier than usual before going back down.

Most of the refineries haven't transitioned to summer-blend gasoline, AAA says it's unknown if prices have peaked for the spring.

The Charleston area has South Carolina's highest-priced gasoline at $3.50. Spartanburg has the state's cheapest gas, at $3.37.

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