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Consider the surface defined by x=3zty*+2. (a) Which of the following vector-valued functions gives a parametrization of this surface? or(u, v) = (3u cos(u), 4u sin(u), 4v2) or(u, v) = (utv, ut + 2,30) or(u, v) = (v, u, 30 + u* + 2) or(u, v) = (30 + u* + 2, u, v) (b) Let S be the portion of the surface with is ys 9 and OS zS 3. Set up, but do not evaluate, an iterated double integral in the dudv order equal to the surface area of S du dv