A. For each relation, what is/are the appropriate primary key(s)?

B. Given your choice of primary keys, identify appropriate foreign keys.

C. List the names of all customers.

D. List the categories of all products.

Consider the following Employer database schema and example instance: Customers Orders OrderDetails Products - Customers(CustomerID, LastName, FirstName, City, State) - Orders(OrderID, CustomerID, OrderDate, TotalAmount) - OrderDetails(OrderID, ProductID, Quantity) - Products(ProductID, Name, Category, Price)