In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech. The old man said, "Thanks I shall never forget this kindness, Ankit."

• The old man applauded Ankit for his kindness and he shall never forget Ankit.
• The old man thanked Ankit and assured him that he would never forget his kindness.
• Ankit was being thanked by the old man for his kindness towards an old man.
• The old man said thank you to Ankit for his kindness.