Question: Define and explain a relation D on the set of all people in the following way: x D y if and only if x = y or x is a descendent of y. Determine which of the properties does this relation have? For each property, explain why the relation has the property, or give a counterexample.
Reflexive
Symmetric
Transitive
Antisymmetric
Equivalence relation
Partial order relation
Total order relation