In a race from point \(X\) to \(Y\) and back, Jack average 30 miles per hour from \(Y, 10\) miles per hour back to point \(X\). Sandy averages 20 miles per hour in both directions. Between Jack and Sandy who finished first

A. Jack
B. Sandy
C. They tie
D. Neither  
E. Impossible to tell

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Correct Answer: D