 
    The questions can come in any order, so make sure you are selecting right option for all questions.
1. Diagram 1
    (a) Generalization
2. Diagram 2
    (b) Specialization
3. Diagram 3
    (c) Aggregation
1. A
    (a) One-to-one
2. B
    (b) One-to-many
3. C
    (c) Many-to-one
4. D
    (d) Many-to-many