Converting a One-To-One Binary Relationship into a Relational Database from an E-R

Multiple Choice

Converting a one-to-one binary relationship into a relational database from an E-R diagram ____.

A) can be done by placing the unique identifier of one of the tables into the other
B) can be done by creating a single table that combines the attributes of the two entities
C) requires the creation of an additional table beyond the two that represent the two entities in the relationship
D) a & b above
E) a & c above