Solve the problem.Find the points on the curve x2 - xy + y2 = 12 where the tangent is parallel to the 
A. (4, -2), (4, 2)
B. (-2, -4), (2, 4)
C. (-4, -2), (-2, 2), (2, -2), (4, 2)
D. (-2, -4), (-2, 2), (2, -2), (2, 4)
Answer: B
Mathematics
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