Which of the following peoples can not be inferred to have been large-scale immigrants to America in the 1800s

A．in the early nineteenth century
B．in the late nineteenth century
C．in the middle of nineteenth century
D．during the Civil War

A．In the late eighteenth century, many cities in America increased in size.
B．The populations of most cities increased naturally in the nineteenth century.
C．The most important way for an urban population to grow is through natural increase.
D．The population growth of American cities was the result of both immigration and expansion.