What is the average of 5 real numbers a, b, c, d, e?
I) a + e = 20
II) a, b, c, d, e are in A.P

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.