Which of the following statements about the sun is true?

1-the sun is one of only a few stars in the galaxy but is much smaller than any of the other stars
2-the sun is only one of billions of stars in the galaxy but is much larger than any of the other stars.
3-the sun is only one of billions of stars in the galaxy, many of which are very similar to the sun.
4-the sun is one of only a few stars in the galaxy, most of which are very similar to the sun.