Select the sentence where the brackets are used correctly to insert editorial clarification.

1. ক
   The teacher said, 'He [the student] was late.'
   
2. খ
   The teacher said, 'He was late [the student].'
   
3. গ
   The teacher [said] 'He was late.'
   
4. ঘ
   The teacher said 'He was late' [].