Suppose a database has the following relations: - ORDER_T (Order_ID, Order_Date, Customer_ID, Customer_Name, Customer_Address) - PRODUCT_T (Product_ID, Product_Description, Product_Price) - ORDER_LINE_T (Order_ID, Product_ID, Order_Quantity) (a) Are the tables in 1NF, 2NF, or 3NF? (b) Convert all tables into 3NF.

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