Three people each contributed x dollars toward the purchase of a car. They then bought the car for y dollars, an amount less than the total number of dollars contributed. If the excess amount is to be refunded to the three people in equal amounts, each person should receive a refund of how many dollars?
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A$$\frac{3x - y}{3}$$
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B$$\frac{x - y}{3}$$
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C$$\frac{x - 3y}{3}$$
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D$$\frac{y - 3x}{3}$$
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E3(x - y)