Please choose the correct answer to the question: The ice cubes in a freezer are melting. Which change most likely is causing the ice cubes to melt?

Answer1: a decrease in the mass of the ice cubes Answer2: an increase in the mass of the ice cubes Answer3: a decrease in the temperature inside the freezer Answer4: an increase in the temperature inside the freezer

Answer format: answer1/answer2/answer3/answer4