D Fills Up His Tank with Petrol at a Garage

D fills up his tank with petrol at a garage and leaves without paying. Which of the following represents the law:

A) D has stolen the petrol simply because he was dishonest.
B) D stole the petrol because it still belonged to the garage until payment.
C) D has stolen the petrol because the seller retained an interest in the petrol.
D) D may not have stolen anything belonging to another because once in his tank the petrol belonged to him (Edwards v Ddin [1976]) .