The teacher said, “The earth moves round the sun.” Pick out the sentence which correctly changes the above sentence into indirect speech

The teacher said, “The earth moves round the sun.” Pick out the sentence which correctly changes the above sentence into indirect speech.

1. The teacher told that the earth moves round the sun.
2. The teacher said that the earth had moved the sun.
3. The teacher told that the earth moved round the sun.
4. The teacher said that the earth moves round the sun.

Answer: The teacher said that the earth moves round the sun.