[4] points for a professional looking document (organization, neatness, equation editor, etc.) 1) [3] Let A = {0,1,1 3, 4} and B = {0, 1,2, 3,4, 5,6}. Let R be a relation from A into B defined by (111,13) E R if and only if bla. Are the following elements of R? Why or why not? a) {2,4) b) {3,3} t] (3,0) d) {0,3} e) [4,2] f) (6,3) 2) Let A = {0, 1, 3, 6, 7, 8, 13, 19,20}. Consider the relation =4 (congruence mod 4) on A. a) [4] List the elements of the relation =4 on A. b) [2] Explain why #4 is an equivalence relation on A. Don't just state the properties; explain what it means to say 4 satisfies each of these properties. c) [2] List the equivalence classes