Answer: a partial order but not an equivalence relation.
- A an equivalence relation
- B a partial order but not an equivalence relation
- C symmetric only
- D not transitive
Correct answer: B. a partial order but not an equivalence relation
Explanation: It is reflexive, antisymmetric and transitive but not symmetric, hence a partial order.
Concept context
Types of relations, equivalence classes, one-one and onto functions, composition, and invertible functions