Answer: Reflexive and transitive but not symmetric.
- A Reflexive and transitive but not symmetric
- B An equivalence relation
- C Symmetric but not reflexive
- D Neither reflexive nor transitive
Correct answer: A. Reflexive and transitive but not symmetric
Explanation: All three (a,a) pairs are present and no chain is broken, but (1,2) is present while (2,1) is not.
Concept context
Types of relations, equivalence classes, one-one and onto functions, composition, and invertible functions