Choose the normal vector of the tangent plane to the surface defined by at the point (-4, 2, e88). O-52e88, 16e88, 0> O <-52e88, 16e88, - 1> O-52e88, 16e88, 1> - z = e7x²+2xy-2y² - O None of the others < 52e88, 16e88, 0>

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