2. Suppose the points (1, 0, 0), (1, 1, 1), and (1, 0, 2) are the vertices of a planar
patch. Which of the following line segments is normal to the surface of the
patch?
(A) The line segment from (1,0,0) to (1,1, 0)
(B) The line segment from (1, 1, 1) to (2, 1, 1)
(C) The line segment from (1,0, 0) to (1,1, 1)
(D) The line segment from (1,2,3) to (2, 2, 2)
(E) The line segment from (1,2,3) to (1, 2, 2)
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