2. Draw Venn diagrams to describe sets A, B, and C that satisfy the given conditions (4 pts):

a. ⊆ , ⊆ , ∩ ≠ ∅
b. ∩ ≠ ∅, ∩ ≠ ∅, ∩ = ∅, ⊈ , ⊈