Her friend is coming next week. She is a baseball player." Identify the correct way to write the given sentence using a relative clause.

1. Her friend who is coming next week is a baseball player.
2. Her friend is a baseball player. She coming here next week.
3. Her friend is coming next week who is a baseball player.
4. Her friend, who is a baseball player, is coming next week.
5. Her friend baseball player is coming next week.