If Z is an integer, what is the units digit of $$Z^{3}$$ ?
(I) Z is a multiple of 5.
(II) $$\sqrt{z}$$ is an integer.

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 statement alone is sufficient

D

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