I am enrolled in the electrician program at a college in my hometown and I would like to know the opinion of a few people on a question that we had on a quiz. The question reads, "Which rooms in a dwelling unit must have a switch-controlled lighting outlet?"
a. every habitable room
b. bathrooms
c. hallways and stairways
d. all of these

Our teacher had answer "d" as the correct answer, but I think that "b" is correct. Although article 210.70 reads, "At least one wall switch-controlled lighting outlet shall be installed in every habitable room and bathroom" in Exception No. 1, it says "In other than kitchens and bathrooms, one or more receptacles controlled by a wall switch shall be permitted IN LIEU of lighting outlets." So to me, that means that his "all of these" answer would not be correct. While this one problem won't kill my grade, I would really like to get it right. I think that both me and my teacher have had fun with our argument.

Lee