Please choose the correct answer to the question: Rocks and Earth and on the Moon are made of similar materials. What does this observation most likely suggest?

Answer1: Both the Moon and Earth split off from the Sun. Answer2: Life must have existed on the Moon at one time. Answer3: The Moon was probably formed from material from Earth. Answer4: The whole solar system is made up of the same kinds of rocks.

Answer format: answer1/answer2/answer3/answer4