If xy ≠ 0 and x2y2 – xy = 6, which of the following could be y in terms of x?
I. ~$\frac{1}{2x}$~
II. ~$-\frac{2}{x}$~
III. ~$\frac{3}{x}$~
I only
II only
I and II
I and III
II and III
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