Which of the following graphical symbols represents a minimum cardinality of one and a maximum cardinality of one?

Question

Quizplus · Accepted Answer

In the Chen notation, a single line with two ends represents a binary relationship between two entities. The ends of the line indicate the minimum and maximum cardinality of the relationship. 
Choice A represents a one-to-many relationship (one entity connected to many).
Choice B represents a one-to-one relationship (one entity connected to only one).
Choice C represents a many-to-many relationship (many entities connected to many).
Choice D represents a many-to-one relationship (many entities connected to one).

Which of the Following Graphical Symbols Represents a Minimum Cardinality