Aggregation is which of the following?
- Expresses a part-of relationship and is a stronger form of an association relationship.
- Expresses a part-of relationship and is a weaker form of an association relationship.
- Expresses an is-a relationship and is a stronger form of an association relationship.
- Expresses an is-a relationship and is a weaker form of an association relationship.
(a).Expresses a part-of relationship and is a stronger form of an association relationship.
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