Q18 - Let A = {a, b, c} be a set and R = ((a, b)] be a relation on A. Which of the following is correct? a) R is reflexive, is not symmetric, and is not transitive. b) R is not reflexive, is not symmetric, and is not transitive c) R is not reflexive, is not symmetric, and is transitive. d) R is reflexive, is symmetric, and is not transitive. R is not reflexive, is symmetric, and is not transitive