The mother was paying attention to the boy , and so I stuck my tongue out at the baby , as you do . I was rewarded with a huge , hilarious toothy grin , but I had been spotted ! Not by the baby 's mother , but by her big brother , who imperiously shouted " Hey ! Stop doing that to my baby ! "

Question: Which of the following is true of the baby ?
Answer: The baby is a brother .The baby has a sibling .The baby has no teeth .None of the above choices .