Verbal | Re: "except" or "but except"

I wonder we should use "except" or "but except".

For example, in OG16

Mauritius was a British colony for almost 200years, excepting for the domains of administration and teaching, the English language was never really spoken on the island.

(A) excepting for
(B) except in
(C) but except in
(D) but excepting for
(E) with the exception of

The answer is C

However, in Gmatclub free test

The university library offers most of the resources Ronald willneed; except for Spanish translations of certain books, which he