c - Cashback
Cashback - An incentive used by many manufacturers to tempt new car buyers. Once you buy the car a certain amount of cash is refunded, but this usually comes from the manufacturer rather than the dealer. So don't be discouraged from haggling for a further reduction.
Not all cashback offers will give you the money straight away, so check the small print carefully to ensure you know how long you will have to wait for your refund.