Question

What is the speed of a train?
I. The train crosses a pole in 24 seconds.
II. The train crosses a platform of equal length in 48 seconds.

A If the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.
B If the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.
C If the data either in statement I alone or statement II alone are sufficient to answer the question.
D If the data in both statement I and II together are not sufficient to answer the question.
E If the data in both statement I and II together are necessary to answer the question.
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