Studies on AA That Focused Primarily on Spirituality Showed Which

Studies on AA that focused primarily on spirituality showed which results?

A) AA attendance was related to increased abstinence and reduction in drinking intensity regardless of God Belief
B) Atheists and agnostic clients attended AA significantly less often
C) No differences in percent days abstinence and drinking intensity were found between atheist and agnostic versus spiritual and religious clients but the latter had lower drinking frequency
D) all of the above