What is the speed of that train?
I) The train is 40 meters long.
II) The train takes 40 minutes to travel between 2 stations A and B.

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 the statements I and II together 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.