A boy can swim six kilometres per hour in still water, what is his net speed in the river?
I) The boy swims in the same direction as the river current
II) The river current flows at 3 KMPH

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.