Please choose the correct answer to the question: A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?

Answer1: The mass of the balloon increases because the size of the balloon has increased. Answer2: The mass of the balloon increases because the temperature of the balloon has increased. Answer3: The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up. Answer4: The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.

Answer format: answer1/answer2/answer3/answer4