Dana Halsey Is Chair of the Purebred Marmoset Society,which Maintains

Dana Halsey is chair of the Purebred Marmoset Society,which maintains a database of registered purebred marmosets and their breeding history.One table will store the name,birth date,and other characteristics of all of the marmosets that have been registered.Each marmoset is uniquely identified by a registration number.A second table will contain data that link each marmoset to its male and female parents by means of their registration numbers.The primary key in the first table is:

A) name
B) birth date
C) a foreign key in the second table.
D) the primary key in the second table.