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At the end of each school day, Miss Simmons would sweep the floor, empty the trash, arrange the desks and clean the board in her classroom. What conclusion can you draw from the sentence above?
A. The school was too poor to hire a janitor
B. Miss Simmons had nothing else to do
C. Miss Simmons like to have her room clean
D. The students were messy
What is "D. The students were messy"?