Is the speed of the boat in still water at least twice that of the speed of the stream? Statement I : The time taken by the boat to reach a point P, from Q is exactly twice the time taken by the boat, to reach Q from the point P. Statement II : The time taken by the boat to cover 8 km downstream is 40 minutes and it takes four hours to cover 16 km upstream.

• 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 in both statements I and II together are necessary to answer the question
• E. If the data given in both statements I and II together are not sufficient to answer the question.