Read the following context and choose the best option to answer the question.
Context: He would have preferred not to have to outfit her with one of the school brooms since they would have been all but useless in an actual match , but there was nothing for it . To his surprise , however , she reached for George 's Cleansweep instead . His surprise must have shown on his face .
Question: Why does the narrator feel that the school 's brooms are n't good enough ?
Options: 
A. They are ineffective as a cleaning device .
B. None of the above choices .
C. They are bad for flying .
D. They do n't clean and get rid of the dirt .


C