What is the length of the train?
I. The train crosses a man standing onthe platformin 15 seconds.
II. The train crosses its own length in 25 seconds.

A

if the statement I alone is sufficient to answer the question.

B

if the statement II alone is sufficient to answer the question.

C

if both the statements I and II are sufficient to answer the question but neither statement alone is sufficient.

D

if both the statements I and II together are not sufficient to answer the question and additional data is required.