When Designing a Relational Database, Which Field Setup Best Reflects

Multiple Choice

When designing a relational database, which field setup best reflects the user's use of atomic-level data?

A) Age and sex are listed in one field.
B) First and last names are in separate fields.
C) Systolic and diastolic blood pressures are key fields.
D) First and last names are in one field with first name also in a separate field.