Kindergarten students in this experiment tended to perform better when they learned in the sparse classroom than when they learned in the decorated classroom. Aside from the decorations in the classroom, everything else the participants experienced was the same. This most likely means that the: A. students were more distracted in the sparse classrooms than in the decorated classrooms. B. students were more distracted in the decorated classrooms than in the sparse classrooms. C. teachers behaved differently in the two different types of classrooms. D. science lessons were more difficult in the decorated classrooms than in the sparse classrooms.