For real numbers a, b and c. what is the value of a + b + c?
I. ac = 16.
II. a, b, c are in a geometric progression.

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 both the statements I and II are sufficient to answer the question but neither statementaloneis not sufficient.

D

If both the statements I and II together are not sufficient to answerthe question and additional data is required.