Which of the following statements is true about the foreign keys in the cash disbursements table based on a typical UML class model of the purchase and payments process using the REA framework?
a) Foreign keys in the cash disbursements table represent relationships with other tables in the database.
b) Foreign keys in the cash disbursements table are used to store payment amounts.
c) Foreign keys in the cash disbursements table link to product information.
d) Foreign keys in the cash disbursements table are unrelated to the purchase and payments process.