Seven locations (Classroom, Hostel, Library, Auditorium, Dining Hall, Meeting Room, and Common Room) within an unusual college campus are to be assigned floor numbers from 1 (lowest) to 7 (highest). Each location can only have one floor number, and each floor number can only be assigned to one location. The numbering is to be done in accordance with the following conditions :
(i)The Classroom is on a lower floor than the Auditorium.
(ii)The Meeting Room is exactly one floor lower than the Hostel.
(iii) The Library is either on Floor 1 or on Floor 7.
(iv) The Common Room is on Floor 4.
Which of the following is a possible arrangement of the seven locations, going from Floor 1 to Floor 7 ?