I need help with binary relations. The question is which properties do the following binary relations satisfy among the reflexive, symmetric, tansitive, irreflexive, and antisymmetric.

a. The congruence relation on the set of triangles.

b. The subset relation on sets.

c. The relation on people that relates people with bachelor's degrees in computer science.

e. The "has a common natinal laguage with" relation on countries.

f. The "is father of " relation on the set of people.