The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that

A. the cut tips was bent away from the light
B. the cut tips bent towards source of light
C. the intact tips bent away from the light
D. the intact tips bent towards the light  
E. both tips bent away from light

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Correct Answer: D