How did the population of many U. S. cities change after the Civil War? *
Select the best answer from the cholces provided.

A. The number of residents living in cities doubled, and the population became more diverse.

B. The number of people living in cities decreased, and the population became less diverse.

C. The number of people in cities stayed the same, and the population became more diverse.

D. The number of residents living in cities tripled, and the population became less diverse.