Find equations for (a) the tangent plane and (b) the normal line at the point Po(1,2,2) on the surface x² + 3y² + 3z² = 25. (a) Which equation describes the tangent plane? O A. 5x + 3y + 3z=17 O B. x+6y + 6z = 25 OC. x+ 5y + 3z = 17 D. 9x + 3y + 5z = 25

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