Change the sentence from indirect speech to direct speech.
The teacher told the students that the Sun is the center of our solar system.
1
The teacher said to the students, "The Sun has to be the center of our solar system."
2
The teacher told the students, "The Sun had been the center of our solar system."
3
The teacher said to the students, "The Sun is the center of our solar system"
4
The teacher told the students,"The Sun was the center of our solar system"