The take-home message from the research on the extended contact hypothesis is A)if you make the effort to become friends with a member of an out-group it can have far-reaching positive effects. B)extended contact between ethnic groups lead to competition for resources,derogation,and discrimination against the competing group. C)extended contact causes members of an out-group to experience fear that they'll behave in a manner that confirms existing stereotypes. D)there is no relationship between cross-group friendships and levels of prejudice. E)extended contact enhances the in-group bias of both groups.