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गये प्रश्न के लिए निम्नलिखित में से कौन सी जानकारी आवश्यक है।

In how much time will the train cover the distance between city ‘Y’ from city ‘X’?

I.      The train crosses another train of equal length of 200 m running in opposite, direction in 15 seconds.

II.    The train leaves city ‘Y’ at 7.15 am for City ‘X’ situated at a distance of 560 km.

III.   The 200 m long train crosses a signal pole in 10 seconds.

A)  Only II and III          

B)  Only I and III

C)  Only I and II            

D)           All

E)  None of these