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.