During the 1840s, What Came to Define Nationalism

During the 1840s, what came to define nationalism?

A) The idea of cultural superiority over other nations.
B) The belief that only agrarian societies could be virtuous.
C) The belief that labor reform would heal society's ills.
D) The idea that the Industrial Revolution was only for European countries.
E) Unification of small principalities into larger countries was dangerous.