Who is the tallest among A, B, C and D?
I) A is taller than B but shorter than C
II) D is taller than B but shorter than A

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.