If xy not equal 0 and x^2*y^2 -xy = 12, which of the following could be y in terms of x?
I. 1/2x
II. -4/x
III. 3/x
Choose the correct choice from the following answers:
A) II and III	B) II	C) III	D) IV	E) I &II
x2y2 - xy = 12   x2y2-xy-12 = 0   (xy-3)(xy+4)=0   xy = 3 or xy=-4   y = 3/x or y = -4/x   II and III only   II and III
<result>A</result>
If xy not equal 0 and x^2*y^2 -xy = 12, which of the following could be y in terms of x?
I. 1/2x
II. -4/x
III. 3/x