The LEED project has a main entrance and two service entrances in an alley behind the building. Which entrances need non-smoking signage and at what maximum distance from the doors) can the non-smoking signage be posted? Calculator S 45 46 47 48 At the main entrance, 10 ft. (3 m) from the door At the main entrance, 25 ft. (7.5 m) from the door C At the main entrance and the two service entrances, 10 ft. (3 m) from the doors D At the main entrance and the two service entrances, 25 ft. (7.5 m) from the doors