Second left-behind refers to left-behind children in rural areas who are moved to cities by their parents and are surrounded by strangers without friends or playmates because their parents are busy with their work every day.
According to the above definition, which of the following is second left-behind?
The Chen couple who goes into the city to work brings the retarded son Xiaoming to the side, after the civil administration department is informed, he arranges to the disabled person rehabilitation center, the Chen couple can only see Xiaoming once a week