Which statement about sibling relationships is TRUE? a) ?Sibling rivalry is most likely…

Which statement about sibling relationships is TRUE? a) ?Sibling rivalry is most likely when siblings are similar in age, but of different sexes. b) ?Children without siblings tend to be spoiled and selfish. c) ?Older siblings tend to have less academic success than their younger siblings. d) ?Younger siblings tend to be popular with their peers perhaps because of their experience negotiating with older siblings.