Passive voice

Assinale a alternativa que poderia substituir o trecho 'The marvelous new militancy which has engulfed the Negro community' (l. 13-14), sem significativa alteração de sentido ou prejuízo da correção gramatical. 
(A) The Negro community which has engulfed in this marvelous new militancy 
(B) The Negro community which has been engulfed in this marvelous new militancy 
(C) The Negro community that was engulfed in this marvelous new militancy 
(D) The marvelous new militancy in which the Negro community has been engulfed 
(E) The marvelous new militancy that the Negro community has been engulfed 

Gabarito:

Qual o problema da B? Além disso, na passagem para a voz passiva, o pronome "which" ainda deve estar se referindo ao elemento que estava se referindo na voz ativa, né?