B .... Clause followed by noun
(A) She was a child prodigy, and Clara Schumann here she doesnâ€™t refer Clara Schumann
(B) A child prodigy, Clara Schumann ..
(C) Child prodigy that she was, Clara Schumann Pronoun She is used without any previous reference
(D) Clara Schumann has been a child prodigy, and she wordy
(E) Being a child prodigy, Clara Schumann unnecessary use of infinitive Being
I think it is okay to use "she" since Clara Schumann is followed right after.
I remember that many GMAT questions allowed this kind of referral.
I may be wrong..
However, I agree that B is the best.
Thanks for your explanation.