In an Entity-Relationship (ER) model, suppose R is a many-to

General Aptitude
Computer Science & IT

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In an Entity-Relationship (ER) model, suppose R is a many-to-one relationship from entity set E1 to entity set E2. Assume that E1 and E2 participate totally in R and that the cardinality of E1 is greater than the cardinality of E2.
Which one of the following is true about R?

[GATE CS 2018]

A Every entity in E1 is associated with exactly one entity in E2.

B Some entity in E1 is associated with more than one entity in E2.

C Every entity in E2 is associated with exactly one entity in E1.

D Every entity in 2 is associated with at most one entity in E1.