(c) Identify the type of quadric surface determined by each of the following equations. Write your answer in the blank. You do not need to justify your answer. (i) xzzy220 (ii) zLl=x2+y2 .2 L; (iii) x' +y : z ((1) Which of the following vector functions does the graph below represent? Sirnply circle your answer. You do not need to provide justication. For this question you may assume that for each of the choices 1'2 0. A. r(r)=(2cos(t),251n(r),t) B.r(r):(cos(t),sin(r),1) C. r(t)=(cos(t),cos(t),cos(t)) D. r(t) = (2cos(t), t,2sin(t)) E. r(t) = (2cos(t), 21,1)