Question

How much time will train A take to cross a platform of length 400 m? Statement I:  The train A crosses another train B in 40 seconds. Statement II:  Both trains are running in opposite direction.

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