The correct answer is: A. Toramana
Toramana was the most successful ruler of the Huns tribes. He was the son of Mihirkula, the first Hun ruler to invade India. Toramana conquered much of northern India, including the Punjab and the Ganges valley. He was eventually defeated by the Gupta emperor Chandragupta II, but his reign marked the beginning of the Hunnic period in Indian history.
Mihirgula was the first Hun ruler to invade India. He was a powerful and ruthless warrior who conquered much of northern India. He was eventually defeated by the Gupta emperor Chandragupta II, but his invasion had a profound impact on Indian history.
Kadphises was a Hun ruler who lived in the 2nd century AD. He was the founder of the Kushan Empire, which ruled over much of Central Asia and northern India. Kadphises was a successful conqueror who expanded the Kushan Empire to its greatest extent.
None of the other options are correct.