A Mom is out grocery shopping with her 3-year-old. They get to the check-out line and the 3 year old grabs a chocolate bar. The Mom says “no” to the child and takes the chocolate bar away. The 3-year-old proceeds to have a tantrum. The embarrassed Mom has to decide whether or not to give back the chocolate bar or go through the entire checking out process while their toddler rages at her. What should she do?