Which of the following sentence is the correct indirect form of speech ? The teacher said to the student, 'The more you read, the more you learn.

The teacher told to the student that the more you read, the more you learn.

The teacher said to the students that more you read, the more you learn.

The teacher told the students that the more the read the more they learn.

The teacher said to the students that the more they read, the more they learn.