Nathan Ackerman Conceptualized Which of the Following in a 1948

Nathan Ackerman conceptualized which of the following in a 1948 article regarding his new approaches for working with families?

A) For best results, the father must receive treatment as well as the mother.
B) Due to the fundamental overarching relationship between the mother and the child, a father's presence in therapy is unnecessary.
C) When trying to be efficient, it is most useful to condense treatment of the child's environment to therapy of the mother.
D) Mothers can be more open and effective in therapy if the father is not present.
E) Mothers are more influential, which makes working directly with fathers of minimal relevance.