Turkey’s economy has grown prodigiously over the
past ten years, averaging an annual increase each year
that is about eight percent —one of the highest
growth rates in the world.

(A) averaging an annual increase each year that is
about eight percent
(B) with an annual average each year which is about
eight percent
(C) eight percent is what it averages out to each year
(D) with an average annual increase of about eight
percent
(E) the average of the annual increase each year is
about eight percent
[spoiler]
OA-D[/spoiler]