Question: A rounded arrow is used in the E / R Diagram to designate that: Group of answer choices The cardinality is M: 1 There is

A rounded arrow is used in the E/R Diagram to designate that:
Group of answer choices
The cardinality is M:1
There is a requirement that each entity in one Entity Set is related to exactly one entity in the other Entity Set
We should always use rounded arrows
The cardinality is 1:1

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