When Humayun occupied the throne, he found himself surrounded by enemies on all sides. In the East were Mahmud Lodhi and other Afghans under Sher Khan. In the south was Sultan Bahadur shah and the ruler of Gujarat and in the northwest was his brother. What was the name of the brother of Humayun?

A) Alam Khan

B) Kamran

C) Sher Shah

D) Daulat Khan