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Which of the following correctly identifies these symbols when used in an entity-relationship (ER) diagram?

Consider the symbols shown in the exhibit. Which of the following correctly identifies these
symbols when used in an entity-relationship (ER) diagram?

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A.
1 = attribute, 2 = entity, 3 = relationship

B.
1 = entity, 2 = relationship, 3 = attribute

C.
1 = relationship, 2 = entity, 3 = attribute

D.
1 = relationship, 2 = attribute, 3 = entity


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