Please show all step answers are A and D

1. Which of the following pairs of equations describes a pair of orthogonal planes? A. 3x + 2y + 2 = 4 and a ty - 52 = -1 B. x - y+ 2z = 1 and -3x + 3y - 6z = 10 C. 2x - y + 3z = 0 and 4x + 4y + z = 0 D. x = y and y = z E. None of the above. 2. On which of the following types of quadric surface does the following parametriza r(t) = (t sin(t), 3t2, -t cos(t)> lie? A. cone B. sphere C. ellipsoid, but not a sphere D. paraboloid E. None of the above