Correct option is C
I. A < B(False) II. A ≥ B(False)
relation: X ≤ Y > Z = A≤C>B
Either-or condition is satisfying between the conclusions because -
1. Elements are same or equal like A=B
2. Both the conclusions are individually false.
3. All the possible symbols are present between elements such as >, ≥, ≤, < and =
Note: All three condition are satisfied here, hence either-or is the correct answer.