In the sum above, if \(X\) and \(Y\) each denote one of the digits from \(0\) to \(9\), inclusive, then \(X=\)

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\(\begin{array}{c} YX7 \\ +6Y \\ \hline Y7X \end{array}\)

In the sum above, if \(X\) and \(Y\) each denote one of the digits from \(0\) to \(9\), inclusive, then \(X=\)

A. \(9\)
B. \(5\)
C. \(3\)
D. \(1\)
E. \(0\)

OA E