350 grams of fresh brewed 97oC black coffee is contained in a 470 mL styrofoam cup at normal atmospheric pressure, sitting in the cup holder of a car on a cold day. We would like to study the time it takes for the coffee to cool down to the same temperature as the car. Which option best describes the styrofoam cup in this scenario?
Select answer from the options below
A) The surroundings
B) The system
C) A diathermal wall
D) An adiabatic wall