Given the following relations on the set of all people. Check ALL correct answers from the following lists: (a) a is older than b A. antisymmetric B. irreflexive C. symmetric D. reflexive E. transitive (b) a and b have a common grandparent A. reflexive B. transitive C. antisymmetric D. irreflexive E. symmetric (c) a has the same first name as b A. symmetric B. reflexive C. irreflexive D. transitive E. antisymmetric (d) a and b were born on the same day A. antisymmetric B. irreflexive C. transitive D. reflexive E. symmetric