Jeremy and His Sister,Adriana,have Been Engaging in Sexual Exploration Together

Jeremy and his sister,Adriana,have been engaging in sexual exploration together.What does research indicate about this behavior according to the text?

A) Current research fails to agree about the consequences of brother-sister incest.
B) Research indicates that incestuous behavior between a brother and sister has long-term harmful effects.
C) Recent studies show that brother-sister incest is harmless.
D) According to recent studies,the sister generally feels long-term guilt whereas the brother is not emotionally harmed.