How many students failed in Mathematics and Natural Science?
I) 12 student, passed in both Mathematics and Natural Science.
II) The number of passes in Mathematics exceed the number of passes in Natural
Science by 8.

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.