- Dormitories range from two to six storeys in height.
- If a dormitory room is above the second floor, it has a fire escape.
If the statements above are true, which of the following must also be true?
- 2nd floor dormitory rooms do not have fire escapes
- 4th floor dormitory rooms have fire escapes
- only dormitory rooms above the 2nd floor have fire escapes
- some 2-storey dormitories do not have fire escapes.