The main relation of a motor vehicle registration bureau's relational database includes the following attributes:
![446_2a8697a9-6969-4bef-9562-dc4a1fa9d930.png](https://secure.tutorsglobe.com/CMSImages/446_2a8697a9-6969-4bef-9562-dc4a1fa9d930.png)
The Vehicle Identification Number is a unique number assigned to the car when it is manufactured. The License Plate Number is, in effect, a unique number assigned to the car by the government when it is registered. The Owner Serial Number is a unique identifier of each owner. Each owner can own more than one vehicle. The other attributes are not unique. What is/are the candidate key(s) of this relation? If there is more than one candidate key, choose one as the primary key and indicate which is/are the alternate key(s).