Children Whose Parents Encourage Them to Tell Stories and to Talk

Children whose parents encourage them to tell stories and to talk about past events have earlier childhood memories than children not encouraged to do so.This suggests that

A) the types of social experiences children have do indeed factor into the development of autobiographical memories.
B) cultural differences in parent-child interactions may lead to cross-cultural differences in the number or type of childhood memories that children form.
C) autobiographical memories may be related to the child's understanding of the general form that stories take.
D) all of these.