Two analogies that relate objects to the associated rooms is given in the form "A : B. C : ?". "A : B" relates object A to room B. Your task is to replace the question mark (?) with the appropriate room for the given object C, following the "A : B" relation.

shelf : nursury. boxes : ?
attic
To store shelves, one could put them in a nursery. Similarily, one could store boxes in an attic..