Which of the Following Would Be True When Implementing This

Multiple Choice

Which of the following would be true when implementing this REA diagram into a relational database?

A) The primary key for Employee would be a foreign key for Cash Receipts.
B) The primary key for Cash Receipts would be a foreign key for Cash.
C) The primary key for Parts would be a foreign key for Service Request.
D) The primary key for Sales would be a foreign key for Service Request.