The correct option is C Barons
During England's agricultural revolution between the 16th and the 18th century, the bigger landlords created very large estates and increased the production of food while hiring people to work on their lands for them. They took over the small farms of peasants and enclosed village common lands, and eventually built large estates. The landless peasants, whose farms were taken, and the villagers, who had made a living by grazing animals on the common lands, were both left with no jobs.
Serfs were agricultural labourers bound by the feudal system and were tied to working on their lord's estate.