A farmer wants to plant three rectangular fields so that the widths are the same. The areas of the fields, in square yards, are given by the expressions 42x4y, 14xy4, and 28xy. What is the greatest possible width of the fields if x = 4 and y = 3?
A) 4 yards
B) 6 yards
C) 8 yards
D) 10 yards

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