Find out the correct indirect form of the following direct sentence: Karim said , " I must go home"

Find out the correct indirect form of the following direct sentence: Karim said , " I must go home"

• ক. Karim said that he will have to go home
• খ. Karim said that he shall have to go home
• গ. Karim said that he shall have to go home
• ঘ. Karim said that he must go home