Please choose the correct answer to the question: Which of the water samples described below has the greatest average kinetic energy per molecule?

Answer1: 1 liter of ice at a temperature of -50°C Answer2: 10 liters of ice at a temperature of -75°C Answer3: 1 liter of water at a temperature of 75°C Answer4: 10 liters of water at a temperature of 50°C

Answer format: answer1/answer2/answer3/answer4