In Questions Determine Whether the Binary Relation Is:
(1) Reflexive $$\text { The relation } R \text { on the set of all subsets of } \{ 1,2,3,4 \} \text { where } S R T \text { means } S \subseteq T \text {. }$$

In questions determine whether the binary relation is:
(1) reflexive, (2) symmetric, (3) antisymmetric, (4) transitive.
- $$\text { The relation } R \text { on the set of all subsets of } \{ 1,2,3,4 \} \text { where } S R T \text { means } S \subseteq T \text {. }$$