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. Nasir asked his tutor, "Do I need to learn these formulas?"

• Nasir asked his tutor if he has to learn those formulas.
• Nasir asked his tutor if he had to learn those formulas.
• Nasir asked his tutor didn't he had to learn those formulas.
• Nasir asked his tutor hadn't he have to learn those formulas.