What is the Indirect Speech of "Toni said, 'I must write a letter'?"

• ক Toni said that she must write a letter.
• খ Toni said that he shas to write a letter.
• গ Toni said that she had to write a letter. ✅ সঠিক উত্তর
• ঘ Toni said that she wrote a letter.