Could you help me with one Algebra problem?
 Construct the appropriate number sets with the given information. Use the sets to match the following:
 Given
 a = Ø
 b = B 
 c = then A ∪ B = B
 d = A
 e = then A ∩ B = B
 I have to match these options:
 1. If AB 
 2. If BA 
 3. A ∪ Ø 
 4. A ∩ Ø 
 5. B ∪ Ø 
 with these options:
 c
 a
 d
 b
 e