Refer to the association marked with the number 2 in the preceding diagram. Which of the following

Question:

Refer to the association marked with the number 2 in the preceding diagram. Which of the following is the best way to implement the association in a relational database?
a. Post the primary key of bill of materials as a foreign key in raw materials.
b. Post the primary key of raw materials as a foreign key in bill of materials.
c. Create a linking table between raw materials and bill of materials.
d. The location of the foreign key is optional.
e. None of these is the best way to implement the relationship.