A small spoon is placed in a large, hot cup of coffee. Heat flows from the coffee to the spoon until both reach the same temperature.

(A) Explain why heat flows into the spoon from the coffee and not the other way around.

(B) Explain why heat transfer ceases when the spoon and the coffee reach the same temperature.

(C) At thermal equilibrium, do the spoon and the coffee have equivalent thermal energies? Justify your answer.

(D) Describe the changes to the entropy of the spoon and coffee, as well as the net entropy of the spoon-coffee system during this process. Explain your reasoning.