Answer - B - Upon entering the restaurant for a work shift, someone should first wash their hands. Washing your hands is the first action you should take when entering the restaurant for a shift since this reduces the risk of microbes, viruses, and other pathogens from making contact with any surface within the kitchen, front of house work station, as well as many other areas that are used throughout the day.
Note that if you touch a physical time clock, it would make sense to wash your hands again (ed: note added based on insightful comment below)