Answer:
B. He was a commoner of peasant origin.
Step-by-step explanation:
The han period was a period between 202 BC and 220 BC, when the han dynasty created by the rebel leader named Liu Bang was in existence. The han dynasty was ruled by the House of Liu.
Liu Bang is also referred to as Emperor Gaozu and he was born in 256 BC in Feng, Pei, State of Chu. He was a commoner and as such had a very humble background from which he rose to become a phenomenal politician and later becoming an emperor of the Han Dynasty.
Hence, that which was unusual about Liu Bang, the founder of the Han Dynasty is that he was a commoner of peasant origin.