To solve this question, the user needs to have knowledge about Indian history and the famous rulers of India.

The correct answer is:

B. Samudra Guptudu

Explanation: Samudra Gupta was a great ruler of the Gupta Empire in ancient India. He is known for his conquests, military campaigns, and expansion of the Gupta Empire. He is often referred to as the "Indian Napoleon" due to his military prowess and his ability to conquer and rule over a vast empire. Option B is the correct answer.

Option A: Chandra Gupta Mourya was a ruler of the Mourya Empire in ancient India, known for his military conquests and expansion of the empire. However, he is not known as the "Indian Napoleon."

Option C: Ajatashatru was a king of the Haryanka dynasty in ancient India. He is known for his military campaigns and conquests in the region. However, he is not known as the "Indian Napoleon."

Option D: Pulakesi was a ruler of the Chalukya dynasty in ancient India. He is known for his military campaigns and conquests in the region. However, he is not known as the "Indian Napoleon."

Therefore, the correct answer is option B.