Suppose a traveler wanted to visit a museum, an art gallery, and the state capitol building, 45-minute tours are offered attraction hourly from 10 a.m. through 3 p.m. (6 different hours). Solve the problem, disregarding travel time. In how many ways could the traveler schedule all three tours before 1 p.m.? A) 3 B) 1 C) 6 D) 9