Answer the following questions by choosing the most appropriate option.

Transform the given sentence into complex sentences.
We have informed her of her success.

A. We have informed her of her being successful.

B. She has been informed by us of her success.

C. We have informed her that she has succeeded.

D. She has been informed that she has succeeded.

Please do not use chat terms. Example: avoid using "grt" instead of "great".