Under the Fair Labor Standards Act,which of the Following Scenarios

Under the Fair Labor Standards Act,which of the following scenarios is legal?

A) 12-year-old Molly works several hours per day on her family's farm picking vegetables
B) 14-year-old Luis works full time bagging groceries at a supermarket
C) 13-year-old Dianna works five hours per week stocking shelves at a drugstore
D) 17-year-old Cole has taken a part-time job as a coal miner working alongside his dad