Find the roots of the quadratic equation \(2z^2 - 5z + 2 = 0\)

A. 2 or \({1 \over 2}\)
B. \({7 \over 4} \ or {7 \over 4}\)
C. \({7 \over 4} \ or {1 \over 2}\)
D. \(2 \ or {7 \over 4}\)

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