Review Figure $7\mathrm{.}7.$ Which of the following is a correct posting of a foreign key to implement

the model in a relational database? LO $7-5$

a$.$ Labor Operations primary key becomes a foreign key in Production Authorization.

b$.$ Products primary key becomes a foreign key in Bill of Material.

c$.$ Product Categories primary key becomes a foreign key in Sunset Partners.

d$.$ Products primary key becomes a foreign key in Product Categories.

e$.$ All of the above are correct.