"I do not know his father's name". Make it a complex sentence.

উত্তর জানতে একটি অপশন বেছে নাও 👇

• কI do not know what is his father's name.
• খI do not know what name his father.
• গI do not know what his father's name is.
• ঘI do not know that what his father's name is.