ANSWER
a). I
b). I
c). The two sets contain elements in A only.
Step-by-step explanation
Given the Venn diagram
1. A n B`
Elements in A only and not in B = I
A` U B
All the elements in the set except elements in A = II, III, IV
2. (A' U B)`
This refers to elements in A only = I
3. Relationship between A n B' and (A' U B)`
The two sets contain elements in A only