The correct genre for this situation would be B. Website.
This is considered internet genre and is the best possible method of giving driving directions, because it would be easily accessible, and availabe to the public. The other options are more direct, and are more recommended for personalized information. (With the exception of customers that are subscribed to receive updates on the restaurant)
What??? Is there something we need to read??? I can't answer it unless you give a little bit more details. Comment what you need and then I can probably help you.
