Who among the following rulers of medieval Gujarat surrendered Diu to Portuguese?

1. The question asks which ruler of medieval Gujarat surrendered Diu to the Portuguese. 2. During the reign of Sultan Bahadur Shah of Gujarat (reigned 1526–1535 and 1536–1537), he faced threats from the Mughal Emperor Humayun. 3. Seeking assistance against the Mughals, Bahadur Shah entered into the Treaty of Bassein (1534) with the Portuguese. As part of the agreement, he ceded Bassein and its dependencies. 4. In 1535, under pressure and seeking continued alliance, Bahadur Shah allowed the Portuguese to construct a fort at Diu and effectively surrendered control of the strategic island port to them. 5. Ahmad Shah founded Ahmedabad and ruled much earlier (early 15th century). Mahmud Begarha was a powerful ruler (late 15th - early 16th century) who resisted the Portuguese. Muhammad Shah is a less specific name, possibly referring to rulers who were not directly involved in the surrender of Diu. 6. Therefore, Bahadur Shah is the ruler who surrendered Diu to the Portuguese.